ReviewsDigital Relay Controller

AEDIKO 4pcs DC 5V Relay Module 2 Channel Relay Board with Optocoupler Support High or Low Level Trigger

Normally Open Interfaces Maximum Load : AC 250V/10A, DC 30V/10A.
2 Channel Relay Module 5V Comes with High-Current Relay,Trigger Current : 5mA.
5V Relay Module is 2 Channel Isolated, Each Relay Can Individually Switch On/Off by An Opto-Isolated Digital Input.
Relay Module Designed With Fault-Tolerant , Even If The Control Line Breaks, The Relay Will Not Move.
With Optical Coupling Isolation,Triggering More Reliable and Stable.
2 Channel Module Equipped With Screwed Terminal Plate and Fixed Bolt Holes,Standard Interface Can Connect With Microcontrollers and be Controlled by a Wide Range of Microcontrollers.

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Solid State Relay, 90 to 280VAC, 25A

Solid state relay module, long service life and high reliability, low drive voltage and current, widely used in many automatic control systems..
Model: XRE-1D4840 Solid State Relay 40A DC to AC..
Input voltage: 3-32V DC Output voltage: 24-480V AC.
Note: The current of this product is 40A for a long time. A large heat sink or fan need to be added..
Package Content: 2 x 40A Solid State Relay, ideal for automatic process control application, a must component for temperature controller and other machinery control system..

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2Pcs STC-1000 Digital Temperature Controller 12V Thermostat Incubator Thermoregulator Relay Heating Cooling with Sensor Probe Cable

STC-1000 temperature controller has 2 relays, compared with other 1 relay temperature controllers, you can wire 2 appliances (heater and cooler) at the same time..
Two work mode: Heating ( start temperature is less than stop temperature), Cooling ( start temperature is above than stop temperature), refrigerating contro, output delay protection.
STC-1000 temperature control range: -50-99°.
control accuracy of 0.1 degrees celsius, control temperature by setting the temperature setting value and the difference value, to set start temperature, stop temperature, corrected temperature correction, delay start..
1M waterproof probe, the digital temperature controller can be used in humid and water environment, you can use it in home brewing, refrigerator, pet feeding, reptile, tank, hatching, fermentation, nursery heat pad, accelerated germination..
Automatically switch between cooling and heating modes: Automatically switch between cooling and heating modes to keep your device within the ideal temperature range. The stable and reliable flames retardant plastic shell reaches V0 level and passes the EMC anti-interference test. Audible and visual alerts for high temperature and sensor failure issues..

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AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board

【30VDC 250VAC Load】 Equiped with high-current relay, AC250V 10A.
DC30V 10A, each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground..
【High Level Trigger】The relay module is triggered by high level signal, which can be input from microcontroller IO..
【 3V/3.3V power relay module】- This Relay Board provides a single relay that can be controlled by any 3V/3.3V digital input from your microcontroller IO..
【Wide Application】- These 3v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4/3.3V /NodeMCU/ ESP8266 module etc..
【Long Life】 - Fast response time less than 20ms and long lifetime up to 100,000 times snap action with diode freewheel protection..

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12 Volt Timer Relay, DROK 0.1s to 999min 50mA 4-Mode On-Off Automotive Digital Delay Relay, Electric Delay Timer Switch, Cycle Time Delay Module with LED Display

4 MODE TIME DELAY RELAY: DROK 12V relay is provided with 4 different settings and supports various triggering signal source, like positive side of power supply triggering, Button, PNP sensor, PLC signal, which is available for most of applications..
WIDE ADJUSTABLE TIMING RANGE: This off delay relay supports widest timing range, 0.1 seconds to 999 minutes adjustable, which can fulfilled your various need..
STRONG ANTI-INTERFERENCE ABILITY: The output of digital timer relay adopts optocoupler isolation, which enhances the capacity of resisting disturbance power consumption..
SUPER SIMPLE OPERATION: Our relay board is operated by buttons and the delay module is equipped with LED digital display which is convenient for you to check the set value..
AUTOMATIC SAVING FUNCTION: After you finish the setting, you can cut off the power and then the parameters will be saved automatically, handy and convenient..

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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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UMLIFE 2PCS Temperature Controller Module with Case, XH W1209 LED Display Digital Thermostat Module with Waterproof NTC Probe -50~110 Electronic Temperature Temp Control Module Switch

The W1209 thermostat module controller has a sensor input, keys, LED display, and a relay. It can be reprogrammed for control, timing, or counting..
Temperature Measurement Range: -50~110. Control Precision: 0.1 celsius.Input Power (DC): 12V.
Output: 1 Channel Relay Output, Capacity: 10A.
Electronic digital thermostat with a 3-digit LED display, extremely bright. Operation both in heating and cooling to easily control equipment and devices..
The output is electronically controlled by a microprocessor, to guarantee the utmost precision of intervention and an excellent resolution of reading temperature..
The NTC probe is waterproof and allows to control the temperature even of fluids, allowing the controlled heated or coolingNote: The wood laminate case is the clear plastic case. You need to tear the wood outside layer off carefully, the outside layer is very thin. (It can protect the inside to prevent scratches.) And you need to assemble and install the case by yourself, it comes disassembled with tiny bolts and nuts.)..

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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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PID Temperature Controller Meter Indicator, Jaybva Digital Universal Thermostat C and Fahrenhe F Display SSR and Alarm Output 40A Solid State Relay and Thermocouple Probe Heat Sink Included

furnance, plastic extruder heating process etc..
TC/RTD universal input , such as K , J , E , Pt100 etc. SSR solid state relay output ..
Dual Output: 7 different Dual Output combinations with 1 relayed output and 1 SSR control voltage output..
This PID temperature controller can read TEMPS in Fahrenheit (F) and Celsius(C) . You can choose Centigrade or Fahrenheit unit . Wide Application: This pid controller is widely used in auto system in line of light industry, chemistry, machinary , metallurgy, ceramics, pertrification industry, or temperature control and adjust system of food & beverage, smoker , incubator, oven.
Contents included: Temperature controller , one 40A solid state relay , one K type thermocouple sensor probe , one heat sink ( Heat sink size: Roof: 50mm x 60mm.
This temperature controller has built in autotuning . After you have set your temps you press and hold the blue button for a few seconds and the AT light will come on and run through an auto tuning program to get you the best PID results..

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