DFRobot Magnetic Switch Door / Window Contact

This magnetic switch from DFRobot consists of two parts: a reed contact with cable and a magnet in a plastic housing. When the two parts come closer than 1 cm, the reed contact closes. This makes it possible to detect whether a door, a window or a flap is open or closed. The housings are protected to IP67.

Important: The reed contact switches at most 1 W and 50 mA. It is intended for signals to a microcontroller or an alarm panel, not for switching loads directly.

Features:

Reed contact with cable and magnet in the counterpart
Switching distance below 1 cm
Protection class IP67, housing made of PBT/ABS
Two mounting holes per part
Switching frequency up to 200 Hz

Application Examples:

Door and window contact for alarm systems and smart home
Detecting end positions of flaps and slides
Theft protection on bicycles, e-bikes or cars

Documentation:

DFRobot product page

Technical Data:

Manufacturer: DFRobot
Manufacturer SKU: SEN0387
Switching distance: below 1 cm
Contact: normally open (NO), two wires brown and blue; DFRobot states the type NO/NO+NC
Switching voltage: 0 to 380 V DC/AC according to DFRobot
Contact rating: 1 W
Load current: at most 50 mA
Switching frequency: 200 Hz
Dielectric strength: 1000 V AC, 50/60 Hz, 60 s
Insulation resistance: at least 50 MΩ (500 V DC)
Protection class: IP67
Housing: PBT/ABS
Operating temperature: -10 °C to 70 °C
Humidity: 25 to 95 %
Cable length: at least 1.8 m (DFRobot dimension drawing)
Dimensions per part: 24 × 16.5 × 8 mm
Weight: 34 g