Top Digital Relay Reviews

Macurco TX-6-AM Ammonia NH3 Low Voltage Fixed Gas Detector Controller Transducer

Fan relay actuation: Selectable from 15 to 75 ppm Nh3.
Output: fan relay, alarm relay and 4-20ma current loop.
Controls: Digital display (0-100 ppm), buzzer, fan Delay, fan minimum runtime.
Mounts on a standard 4” x 4” electrical box.
5 a spdt fan relay controls starters of exhaust fans.

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Edwards Signaling 7005-G5 Door Annunciator

...equipment, optional relay working mode. Has 6 alarm inputs. When the input is shorted to GND, an alarm will be triggered and an alarm message will be sent..
☆☆One relay output with call mode and the other relay output with SMS control can be easily programmed with mobile phone or PC software. SMS can be used for digital programming quickly and conveniently through SMS or on‑board quick teach button..
☆☆Support free control mode or security authorization number control mode, support custom commands, easy to understand. Optional password to keep the system in safe operation mode, support remote password operation and password change..
☆☆Applications include remote control of heating of holiday houses, lighting, engine preheaters, aircraft engine heaters, irrigation systems, well pumps, pumping stations, cabin heaters, resetting of remote servers, arming and disarming security systems, and door Access control and garage door..

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5v Relay Board Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 5V digital output from your microcontroller..
【Main Specification】- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A.
【Adopted SMD Optocoupler Isolation】- The isolation circuit prevent damages to I / O port by relay switch current..
【Wide Application】- These 5v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc..
【Humanization Design On Interfaces】- All interfaces can be directly wired out through the terminals..

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Youngneer 5v Relay Board Raspberry Arduino Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 5V digital output from your microcontroller..
【Main Specification】- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A.
【Adopted SMD Optocoupler Isolation】- The isolation circuit prevent damages to I / O port by relay switch current..
【Wide Application】- These 5v relay board works well with Arduino/ ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc..
【Humanization Design On Interfaces】- All interfaces can be directly wired out through the terminals..

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3v Relay Board Raspberry Pi Arduino Relay Module 1 Channel Opto-Isolate High Level Trigger for IOT ESP8266 Microcontrollers Development Board

【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 3V/3.3V digital input from your microcontroller IO..
【Main Specification】- The 3v Relay 1 Channel power switch module compatible with 10A 250VAC and 10A 30VDC load.4pcs * 2.5 mm Fixed Bolt Hole..
【Adopted Optocoupler Isolation】- 3V/3.3V power relay module supports photocoupler isolation control and dual power supply input ensure high anti-interference ability. Fast response time less than 20ms and long life time up to 100,000 times snap action with diode freewheel protection..
【Jumper Caps】You can select whether the relay and the signal use the same power supply or not by removing the jumper caps on the pins. And It is better to share the same power supply, because that is more convenient for using..
【Wide Application】- These 3v relay board works well with Arduino/ ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4/3.3V /NodeMCU/IOT/ ESP8266 module etc..

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Weewooday 15 Pieces 5V Relay Module 1- Channel Relay Control Boards with Optocoupler Isolation High and Low Level Trigger Expansion Board

Relay module: this relay board supports high and low level trigger and can be controlled by any 5V digital output of the microcontroller.
Parameter details: maximum load of normally open interface: AC 250v/ 10A, DC 30v/ 10A, trigger current is 5mA.
The 5v relay control board adopts SMD optocoupler isolation, which has strong driving ability and stable performance.
Practical design: with fault-tolerant design, the relay module will not operate even if the control line is disconnected.
All interfaces can be provided through directly connected terminal s since the humanized interface design, it is very convenient to use.
High compatibility: the relay module can be directly controlled by the 5V logic signal provided by the microcontroller, suitable for 8051, Raspberry Pi, PIC, DSP, ARM, AVR, MSP430, TTL logic, etc..
Wide application: this 5V relay board can be applied with Raspberry/ CNC machine/ ARM/ PIC/ AVR/ MCU/ PS4 and more.

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Inkbird PID Temperature Controller Kit High Voltage 100ACV to 240ACV Comes with SSR 40DA Solid State Relay K Type Thermocouple and White Heat Sink

【Alarm Output】With one alarm relay output: AC250V 3A (Resistive load) ON/NC, you may connect it with a buzzer..
【Supports 3 Wires Sensors】3 wires sensor or 2 wires sensor, like K type thermocouple and Cu500, are supported by this PID temperature controller.
【SSR Output】With one relay output for external SSR, SSR or relay is a must for this temperature controller. A 40DA SSR is included.
【Digital Display ℃/℉】It’s a digital PID controller but also supports Centigrade and Fahrenheit reading.
【2 Temp Displaying Windows】The real-time temperature and the setpoint are shown at the same time.

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KNACRO -20~60℃ 10A XY-TR01 Digital Temperature Humidity Control Module Controller High Precision

Temperature and humidity control module high precision digital display word double output automatic constant temperature and humidity control panel.
Product adopts industrial-grade chip, high-precision SHT20 temperature and humidity sensor..
Parameter remote read/set: Through the UART, set the starting temperature/humidity, stop temperature/humidity, temperature/humidity correction parameters.
temperature/Humidity Real-time reporting: If the temperature/humidity reporting function is turned on, the product will detect the temperature/humidity and relay status by the 1s interval, and pass the UART to the terminal to facilitate data collection.
Relay enabling (by default): If the relay is disable, the relay remains disconnected.

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2-Pin Electric Flasher Relay VOFONO 12V Heavy Duty 2 Pin Compatible Automobile Motorcycle Bike Scooter Fix Turn Signal Bulbs Fast Hyper Flash，Two Prong Round

This is a heavy duty 2 pin 12V electric signal flasher (blinker) relay that is a plug and play design. No extra wiring or modifications are required....
Our led flasher relay retain the reliability of an flasher along with staying extra cool, consuming very little power and extra long lasting life..
Our 2 pin 12 volt round led flasher relay work for Most Automotive/Motorcycle/Bike to fix the rapid flashing turn signal or prevent weak or no....
Our no load digital flasher relay Works with regular bulbs.
Our two prong led flasher relay Product Dimension:2.3 x 1.4 x 1.3 inches . MAX 20 AMPS & Voltage: 12 volts.

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2-Pin Electronic LED Flasher Relay，RDBS 12V LED Heavy Duty 2 Pin Compatible Automobile Motorcycle Bike Fix Turn Signal Bulbs Fast Hyper Flash，2 Prong Flasher Relay

This is a heavy duty 2 pin 12V LED electronic signal flasher (blinker) relay that is a plug and play design. No extra wiring or modifications are....
Our led flasher relay retain the reliability of an flasher along with staying extra cool, consuming very little power and extra long lasting life..
Our 2 pin 12 volt round led flasher relay work for Most Automotive/Motorcycle/Bike to fix the rapid flashing turn signal or prevent weak or no....
Our no load digital flasher relay Works with regular bulbs, and some LEDs.
Our two prong led flasher relay Product Dimension:2.3 x 1.4 x 1.3 inches . MAX 20 AMPS & Voltage: 12 volts.

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Dakota Digital PAC-2800BT Electronic Fan Controller 70 Amp with Bluetooth Control

The PAC-2800BT was designed for the ultimate in flexibility and to be a simple add-on in any application using an electric fan. Included is a 70amp relay, enough for even the most power hungry of cooling fans. Fully programmable, the PAC-2800BT will work with your existing water temp gauge, operating from the temperature sending unit already installed. A dedicated sending unit can be installed for applications without a water temp gauge..
ompatible with single fan, dual fan or single two-speed fan applications.User-settable on and off temperatures.** 70A relay included, additional relay is available for purchase separately.
RLY-1 (0-30 amp) or RLY-3 (0-70 amp). The use of a second relay RLY-1 (0-30 amp) or RLY-3 (0-70 amp) will be required for dual fan or two speed fan operation (not included, sold separately)..
User-settable on and off temperatures. The PAC-2800BT features fully programmable "fan on" and "fan off" temperatures to suit any application or personal preferences. The PAC-2800BT offers a full digital LED readout for displaying temperature readings and maintaining simple installation. A second relay is required for dual fan or two speed fan operation, sold separately..

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Hayward SP23115VSP MaxFlo VS 0.85 HP Variable-Speed Pool Pump, Energy Star Certified,BLACK / GOLD

Designed to replace existing 115V single-speed pumps without the need for electrical upgrades.
Built with a permanent magnet motor for up to 80% energy savings over ordinary single-speed pumps.
Integrated, programmable, rotatable digital interface with 24-hour clock and up to 8 custom timer functions. Optional wall mount kit available to remotely locate digital interface.
Can be connected to any automation system using relay controls.

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ANMBEST 2PCS 4 Channel 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino

It is 4 Channel Isolated 5V 10A Relay Module, each relay can individually switch on/off by an opto-isolated digital input, Standard interface can be directly connected with microcontrollers and be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, DSP, etc., very convenient..
Equipped with high-current relay, maximum load: AC250V 10A, 15A 125VAC, DC30V 10A.
RELIABLE: Fault-tolerant design, even if the control line breaks, the relay will not move.
With optical coupling isolation, triggering more reliable, more stable..
EASY to INSTALL: Equipped with screwed terminal plate and fixed bolt holes(diameter: 3.1 mm) on both sides for easy installation..
High/Low level trigger can be selected by jumper. Very versatile, you can reverse the input logic with the jumper..

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