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AJMRTC AC 220V Optocoupler Detection Module, AC Sensing Opto-isolator Board, DC 3-5V TTL Signal Output, Isolated AC Voltage Detector for Arduino ESP32 Industrial Monitoring DIY Project
- - Built-in optocoupler for electrical isolation, separate high-voltage AC side and low-voltage control circuit
- - Detects AC 220V signal and outputs TTL level signal to MCU for status judgment
- - Wide DC supply voltage 3V to 5V, compatible with Arduino, ESP32, STM32 and other controllers
- - Onboard indicator LED shows AC detected status for intuitive inspection
- - Compact module, good anti-interference performance for power line detection and alarm
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Overview
Specs
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AJMRTC AC optocoupler detection module uses optoelectronic isolation technology to detect whether the 220V AC circuit is energized. It isolates high-voltage alternating current from the low-voltage single-chip microcontroller circuit to improve safety. When AC input is detected, the module outputs a corresponding TTL level signal. The reserved LED indicator lights up to remind users of the detection result. It works with 3V5V DC power supply and is easy to connect with mainstream development boards. It is commonly used for AC power status monitoring, power failure alarm equipment, relay linkage trigger and industrial signal acquisition DIY projects.
- Brand: AJMRTC
- Detection Object: AC 220V
- Isolation Component: Optocoupler
- Working Voltage: DC 3V 5V
- Output Signal: TTL level signal
- Indicator: Status LED
- Isolation Feature: High voltage and low voltage isolation
- Compatible MCU: Arduino, ESP32, STM32
- Application: AC power detection, power monitoring, alarm trigger circuit
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.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
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