here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
Meet Your Seller
AJMRTC AC 220V Optocoupler Isolation Detection Module, AC Sensing Sensor Board, Output 3-5V TTL Signal for AC Voltage Zero Crossing and On-Off Detection
- - Optocoupler isolation design separates high voltage AC side and low voltage control side
- - Detects AC 220V power status and outputs 3-5V TTL level signal
- - Supports zero-crossing signal detection for relay and dimmer control
- - Wide compatible with MCU, Arduino, STM32 and other microcontroller boards
- - Compact PCB size, simple wiring for industrial and DIY electronic projects
+
+
Overview
Specs
Reviews
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
AJMRTC AC 220V optocoupler detection module adopts optoelectronic isolation technology to detect whether the 220V AC circuit is powered on. It converts the AC signal into a 3~5V digital signal that microcontrollers can recognize. The isolation structure effectively protects your low-voltage control circuit from high-voltage interference. It can be used for AC power status monitoring, zero-crossing trigger, thyristor dimming, power failure alarm and other embedded automation projects.
Specifications
- Brand: AJMRTC
- Detection Voltage: AC 220V
- Output Signal: 3V ~ 5V TTL level
- Isolation Method: Optocoupler isolation
- Function: AC power detection, zero-crossing detection
- Compatible Controller: Arduino, STM32, Raspberry Pi and MCU
- Application: Power monitoring, zero-cross trigger, smart switch, industrial signal collection
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory
LOADING...