DC 6V To 30V One Way Relay Module Wide voltage power supply (6 - 30v), supports micro usb 5.0v power supply, easy to use. With emergency stop function (“stop” button) and reverse polarity protection which can avoid burning by reverse connection. It is 6-30V 1-Channel Delay Power Relay Module with Onboard Adjustable Timing Cycle Switches with Digital LED display It is mostly used in Home Automation Delay Timer Control Switch Module Timer Controller. The Module operates at Operating voltage range of 6-30V, also it supports micro USB 5.0V power supply. Output capability: Can control the device within DC 30V 5A or AC 220V 5A. It can be applied to many fields as there is a wide range of application. Operation Mode: P1: Trigger signal, the relay is on “OP” time, and then disconnect; Within the “OP” time, proceed as follows: P1.1: the signal is triggered again, invalid P1.2: the signal is triggered again, re-clocking P1.3: Signal has triggered again, the relay is disconnected, stop the clock; P-2: Trigger signal, after the “CL” time is off, the “OP” time is on. When the timing is completed, the replay will be disconnected; P3.1: Trigger signal, after the “OP” time is on, the “CL” time is off, then cycle the above actions. If trigger signal within the loop, the relay will be disconnected and stop the clock. The number of cycles ( “LOP “) can be set. P3.2: No need to trigger the signal after powering up, the “OP” time is on, the “CL” time is off, then cycle the above actions; The number of cycles ( “LOP “) can be set. P-4: Signal holding function. If the signal is triggered, timing is cleared, the relay remains on; when the signal disappears, the relay will be off when the “OP” time is over; if another signal is triggered during timing, timing will be cleared. How to choose the time interval: parameter Introduction: OP power over time, turn off time CL, LOP cycle times (1-999 times, “—” is unlimited cycle) In the selection of parameter set interface mode, and press the STOP button to select the time. (1)xxx. if the decimal point is in some place, the time interval is s-1 999 s (2)xx. x is the decimal place is ten, the time interval is 0.1 s 99.9 s- (3)x. x. x is the decimal point are all on, the time interval is 1 min-999 min How to set the parameter: First, make sure relay operation mode According to the operating relay mode, the main interface (power module will flash current operating mode; standard mode P1.1, then come into the main interface); long press SET key two seconds and then choose and enter selection interface mode; by pressing UP, DOWN key to choose the mode setting  (P1.1 ~ P4) After selecting the mode, press short SET to set the corresponding parameter, then the parameter you want to set will flash (OP power in time; CL power off time; LOP cycle times, “—” is unlimited cycle ); by UP, DOWN to set the parameter value, support long press (increase or decrease quickly) and press slightly (increase or decrease of 1 unit); after setting the parameter value by short press the STOP key to choosing decimal place; choose the time interval (corresponding time interval is 0.1 s-999 min); Short press SET to set the current mode next parameter, the process is the same as above After the setting mode parameter, press and hold the SET button then hold the current configuration mode will flash, then go back to the main interface; define success parameter main interface: when the relay does not work, it will show “000” (no decimal point); the operating state relay, the screen has a decimal point   Mode Select Interface: press and hold the SET key to enter; after setting, long-press the SET button back on the main interface Activate Relay Mode: NO: PO in power over time, the relay can be connected OFF: relay is not allowed to connect, when in the off state in short main interface press the STOP key to achieve turn ON and OFF, the current state will flash; then back to the main interface (this function is a function of a sudden stop, 1 key to turn off the relay) Sleep Mode: C-P Sleep mode: within 5 minutes, no operation; nixie tube will close auto display, and a function program well Note: Press and hold the STOP button for 2 seconds can achieve change from C-P to O-d; Current state will flash and then return to the main interface The relay contact is passive and electricity production; 1 channel has the control function on / off Package Includes: 1 x One Way Relay Module Specifications: Operating Voltage 5 – 36V Operating Current 50mA Maximum Operating Current 30 A Power 400W Dimensions (mm) 60 x 34 x 21 Weight (gm) 18

1CH 5v Relay Board High/Low Level Trigger with Optocoupler  The 5V Single-Channel Relay Module high level or low level trigger relay is a great little tool for anyone working with Arduino, 8051, AVR, PIC, DSP, or ARM microcontrollers. This module lets you control high-power devices with either a high or low-level signal. It can handle up to 15A at 125V AC or 10A at 250V AC. Plus, this microcontroller relay module is small (50 x 25 x 20 mm) and lightweight (16g), so this High-Voltage relay module fits easily into your projects. Think about how easy it will be to control high-voltage devices with just a simple signal from your microcontroller. This module is perfect for hobbyists and professionals who want to make their projects safer and more efficient. Whether you’re working on home automation, robotics, or any other project, our 5V relay module for Arduino and other microcontrollers is a perfect fit. Single-channel 12 volt relay connections are Connect VCC to the 12-volt power supply The control signal is used to control the relay. If the signal will be HIGH (5V) the relay will be switched to NO(Normally Open) and if the signal is LOW (0V) the relay will be switched to Normally Connected (NC) If the control signal is high the led will glow and Vice- versa. This is a 12V 1-Channel Relay interface board that can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, 8051, and so on. Key

5V 16 Channel Relay Module This is a 16-channel 5V relay module that can be used as a microcontroller development board module and also as appliance control, and PLC extended output. The relay module is equipped integrated with the best industrial quality optocouplers. This makes them strong and provides an anti-jamming ability and the best stable performance.  This is a 5V 16-Channel Relay interface board and each one of the individual relays needs a 15-20mA Driver Current. The 16 channel relay module features an indication LED for Relay output status and the standard interface that can be controlled directly by many of widely used microcontrollers like Arduino etc. The 5V electromechanical relay module with an AC contact capacity of 250V which also include light coupling protection(optocoupler) for isolation of control circuitry. The plate load power module doesn’t need an external power supply. this 16 channel relay module supports all SCM drives. Also, read our blog on the Working of the Relay Module detailing how does relay module works, its construction, relay contact types, and types of relays. Applications: Can be used as a microcontroller development board, Can be used as a home appliance control Can also be used as a PLC expansion output Package Includes: 1 x 5V 16 Channel Relay Module Specifications: Operating Voltage  5V Number of Channels  16 Compatibility  Boards compatible with Arduino Colour  Blue Dimensions   180 x 90 x 20mm (L x W x H) Weight  100 grams

Waveshare Modbus RTU 8-channel Relay Module RS485 This is an industrial 8-channel relay module that is controlled by an RS485 bus and uses the Modbus RTU protocol. It has embedded protection circuits like power isolation, ADI magnetic isolation, TVS diode, and so on. It also includes an ABS enclosure. The Modbus RTU Relay is extremely simple to use. It is an ideal choice for industrial control equipment and/or applications with high communication requirements due to its fast communication, stability, reliability, and safety. A reverse-proof circuit that prevents the circuit from accidentally being damaged by an incorrect connection. The MCU status and signal transceiving status are indicated by 3 LEDs, they are: LED indicators used: STA: MCU indicator, keep flashing when the MCU normally working TXD: TX indicator, light up when sending data RXD: RX indicator, light up when receiving data Also, read our blog on Applications of Relay explaining 8 major applications, what is it, how does it works, its construction, and different types of relays. What’s On Board:   Applications: Industrial Control - Valve control, pump station control, unattended industrial control system Smart Home - Controlling appliances like air conditioner, access control, purifier, water heater, and so on Intelligent Agriculture - Controlling door curtain motor, air blower, and so on Breeding And Farming - Controlling ventilator, lighting, water supply, feeding system, and so on Package Includes: 1 x Modbus RTU Relay 1 x Power adapter US plug 5V/2A 5.5/2.1 1 x Power adapter EU head Specifications: Power supply voltage 5V Communication interface RS485 Baudrate 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 Default communication format 9600, N, 8, 1 Relay channel 8 Contact form 1NO 1NC Communication protocol Standard Modbus RTU protocol RS485 address  1~255 RS485 terminal protection 600W lightning-proof and surge-suppress, 15KV ESD protection (reserved 120R balancing resistor solder pads) Dimensions (mm) 145 x 90 x 40 (L x B x H) Weight (gm) 344

5V 30A 1-Channel Relay Module The 5V 30A 1-Channel Relay Module is a 1-channel relay module board with LED indicators, It can be controlled by microcontrollers such as Arduino, AVR, PIC, ARM any other microcontroller operating at 5V. The relay module uses an authentic quality mechanical relay and the industry's top quality subminiature two-way isolation optical coupling which gives you the strong anti-interference ability, and stable performance. The user can choose the relay control level, can be a high level off, also can be low level and off. The Single-channel 5V 30A Relay Module Power Failure Relay contains a limited flow resistance, can directly use the power supply is negative control, you can also use the MCU I/O control. The relay module equips a power indicator light (red), 1 road relay status indicator light (blue).With this relay, you can easily control electrical appliances, lights, etc. Also, read our blog on the Working of the Relay Module detailing how does relay module works, its construction, relay contact types, and types of relays. Pinouts: DC+: DC power supply positive pole DC-: DC power supply negative pole IN: signal triggering pin JD+: relay control voltage positive JD-: relay control voltage negative APPLICATIONS: Home automation Robotics Control Control doors and windows via the windows system Package Includes : 1 x 5V 30A 1-Channel Relay Module Specifications: Trigger Voltage (VDC) 5 Trigger Current (mA) 20 Switching Voltage (VAC) 250@30A Switching Voltage (VDC) 30@30A Dimensions 50x33x24mm Weight 20g

NE555 Delay Timer The NE555 delay timer switch is manufactured for high-performance timing and based on the NE555 chip. This delay switch module is a monostable switch module that finds itself very useful in vehicle-based applications like delay to prevent car ignition. The NE555 delay timer switch module is constructed with a power indicator LED and switch trigger timing indication LED.  This is a monostable generator based on the NE555 integrated circuit. It has an adjustable delay time from 0 to 10 seconds using the potentiometer or by changing the capacitance. It is also capable of controlling the device below 220V/10A. Applications: Tone generation. Alarm circuit. Frequency division applications. Relaxation oscillator. Digital counter circuits. Package Includes: 1 x NE555 6V Delay Timer Specifications:  Chip Used NE555 Chip Input voltage 6V Adjustable time 0-10seconds AC Control voltage 250V/max. 10A DC Control Voltage 30V/max. 10A Dimensions  3 x 2 x 1cms  Weight  5 grams

5V Relay Cube This is a 5V Relay Cube. This cube relay has an operating voltage of 5V and has a max current capacity of 7A. This makes it most suitable for use in microcontroller-based devices.  These relays can be used for switching High voltage 250 Volt devices and has a current rating of up to 7 amperes. Ideal for use in your academic projects and for small device switching. Use them to switch high voltage (240AC), and/or high current devices(7A). read our blog explaining What is Relay? - Working, Applications & Types APPLICATIONS: Control Solenoids Motors Bulbs and Lamp Home Automation Projects Freewheeling diode to protect your microcontroller Package includes: 1 x 5V Relay Cube Specifications: Voltage 5V DC NC Contact Rating 7A @ 250V NO Contact Rating 12A @ 120V Number Of Pins 5 Current 7A Weight 10g

4-Channel 5V Relay Board This 4 channel 5 V relay module is a low pull, high release relay module and features energization status indicator light, release status led is off. By default, this is a 5V relay module and uses jd-vcc for the relay power and is compliant with international safety standards, control and load areas isolation trenches. The 4 Channel Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load. It is designed to interface with microcontroller such as Arduino, PIC and etc. The relays terminal (COM, NO and NC) is being brought out with screw terminal. It also comes with a LED to indicate the status of relay. The 4 channel relay module can be used to control various various appliances and other types of equipment with large current. The maximum output of the relay module is AC250V 10A and DC5V 10A. Applications: Switching mains loads Home automation Battery backup High current load switching Also check 8 Channel 5V 10A Relay Module which is equipped with high-current relays, with each relay having normally open and normally closed contacts.  Also check our relay switch collection, with various relay switch products with different specifications and prices. The available relay switch categories include 5V Relays, 12V Relays, Solid State Relays, and more. Package Includes: 1 x 4 channel 5 V Relay Specifications Number of Channels  4 Operating Voltage  5V MAx Output  AC250V 10A and DC5V 10A Dimensions  5 x 3 x 1cms  Weight  5 grams

8 Channel 5V Relay Board It is an 8 Channel Isolated 5V 10A Relay Module, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc. It can also control various appliances and other types of equipment with a large current. Relay output maximum contact is AC250V 10A and DC 5V 10A. One can connect a microcontroller with a standard interface directly to it. Red working status indicator lights are conducive to safe use. It has a wide range of applications such as all MCU control, industrial sector, PLC control, smart home control. Also, read our blog on What is a Relay detailing how it works, relay contact types, and different types of relays and their application. Applications: MCU control Industrial sector PLC control Smart home control Package Includes: 1 x 8 Channel 5V Relay Board Specifications Number of Channels  x 8 Operating Voltage  5V Compatibility  Arduino, AVR, PIC, ARM, PLC Dimensions  140mm X 55mm Weight  15 grams

2 Channel 5V Relay Module with Optocoupler This is a 2-channel 5V relay module 10A. It can be used to control various appliances and other equipment with a large current. This 5V 2 channel Relay interface board can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).   Also check SLA-05VDC-SL-A 4Pin 30A Power Relay  Also, check 12V 2 channel relay board sold by Iotcart. The board has two channels and can be used for various applications. It has a working voltage of 12V. Key

5V 1 Channel made in INDIA - GL Make This 1-channel relay board operates on 5V. Can be used directly to control 240V power appliances from most of the microcontrollers and other control system circuits. Perfect for switching 240V appliances like lights, fans, etc. The board has a high-quality relay, which can handle a maximum of 10A @ 120V or 7A @ 240V AC, 7A/24V DC. Relay has three connections - Common - C, Normally Open-NO, Normally Closed-NC brought out to 3 pin screw terminals which makes it easy to make and remove connections. The board has a power indication and a relay status LED to ease debugging. Power input and relay control signals are brought to header pins on the board. APPLICATIONS: Control Solenoids Motors Bulbs and Lamp Home Automation Projects Freewheeling diode to protect your microcontroller. Package includes: 1 x 5V 1 Channel made in INDIA - GL Make Specifications: Model JQC-3FC(T73) NC Contact Rating 7A NO Contact Rating 12A Supply Voltage 5V Weight 10g

1 CH 5V Active Low Relay Board The 5V 1-channel relay module works with a 5V to 12V TTL control signal. It is perfect for controlling home appliances and for use in microcontroller projects. It can handle a 220V AC load, so you can use it to control motors, LED strips, or other devices. This single-channel relay acts like a regular switch, keeping its contacts separate from the circuit it controls. It has an LED light to show when the relay is ON and accepts input from a 3-5V microcontroller. The output terminals connect to the relay, and there’s a 2x3-pin male header for easy wiring. You can power it with an external 5V source or through the male header. The relay board can handle up to 5A at 240V AC.   Note: It is important that the microcontroller shares ground with the relay board along with other control signals else it will not be able to control the relay.   Also, check the other 5V Relays Collections. Check out our wide variety of Relays including 5V, 12V, and Solid state relay switches.

NE555 Pulse Frequency Duty Cycle Adjustable Module NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator is 5 V square wave signal generator. It generates a square wave signal used for experimental development. Also, use to drive a stepper motor for generating a square wave drive signal. The output duty cycle can fine-tune. Duty cycle and frequency is not separately adjustable, adjusting the duty cycle will change the frequency. Applications:  As a square wave signal generator generates a square wave signal used for experimental development. Used to drive a stepper motor for generating a square wave drive signal. Generate an adjustable pulse for MCU. Generate an adjustable pulse, to control circuitry associated. Package Includes: 1 x NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator Specifications: Main chip NE555 Input Voltage 5V-15V DC Input current  >=100 MA Output amplitude 4.2V V-PP to 11.4V V-PP Maximum output current >=15MA Dimensions  31mm x 22mm Weight  5 grams