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AJMRTC SJTF Reed Switch Sensor Module, Magnetron Magnetic Reed Tube Switch Module, Digital Magnetic Proximity Sensor with LM393 Comparator for Arduino ESP32 Raspberry Pi Smart Door Window Alarm
- - SJTF reed tube sensor module, magnetron magnetic reed switch, detects magnetic field and outputs digital signal for proximity detection
- - Built-in LM393 voltage comparator, onboard adjustable potentiometer to customize magnetic sensing sensitivity
- - Power indicator and signal indicator LED, intuitive working status observation, digital 0/1 switching output
- - Works on DC3.3V-5V, compatible with Arduino, ESP32, Raspberry Pi and other common microcontroller boards
- - Pre-soldered pin header and mounting holes, simple wiring for door window alarm, position detection and DIY automation
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AJMRTC SJTF reed switch sensor module, also known as magnetron reed tube magnetic switch, adopts sealed reed tube as sensing element. When a magnet approaches, the reed tube contacts close and trigger digital output. Equipped with LM393 comparator chip and adjustable potentiometer, users can tune the magnetic trigger sensitivity freely. Power LED and signal LED help quickly check module working state. It supports DC 3.3V to 5V wide voltage input, and outputs clean digital switching signal. With reserved mounting holes and pin headers, it is easy to install and wire. Widely used for door and window security alarm, object proximity detection, position limit sensing and various electronic DIY, STEM and smart home projects.
- Brand: AJMRTC
- Model: SJTF Reed Switch Module
- Sensor Type: Reed Tube / Magnetron Magnetic Switch
- Chip: LM393 Comparator
- Supply Voltage: DC 3.3V ~ 5V
- Output: Digital Switching Signal
- Adjustment: Adjustable Sensitivity Potentiometer
- Indicator: Power LED, Signal LED
- Application: Door Window Alarm, Position Detection, Arduino/ESP32/Raspberry Pi DIY
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: 30 days
- This item is covered by ThermalNest Return Policy
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