Features: OOTDTY fresh and fine The for shell is manufactured from ABS material, which is wear-resistant and durable, and isn't always easy to damage. Sealed design, dustproof and waterproof, even supposing the door sensor is in the water, the signal should not interrupted. Strong adsorption force, the magnet end is made from solid potting to make the sensor extra touchy Light weight, easy to install, strong concealment. Suitable for wooden door/glass door/plastic door. Specifications: Material: Plastic Length: Approx. 64mm/2.51inch Style: Normally Closed / Normally Open Detection Angle: 360 Detection Distance: 20-30m/65.62-98.43ft Transmitting Frequency: 315/433mhz Working Voltage: 100v Quiescent Current: 0.5ua Alarm Current: 15ma Working Temperature: -10~60℃ Package Includes: 1 Set Window Sensor Note: 1.Please enable 1-2cm errors because of guide measurement, just remember to do not intellect before you order. 2.Due to the difference between diversified monitors, the image may not replicate the actual coloration of the item.