Features:OOTDTY brand new and high qualityThe for shell is fabricated from ABS material, which is wear-resistant and durable, and isn't always smooth to damage.Sealed design, dustproof and waterproof, even though the door is within the water, the need not be interrupted.Strong adsorption force, the magnet finish is product of stable potting to make the extra sensitiveLight weight, clean to install, solid concealment.Suitable for wooden door/glass door/plastic door.Specifications:Material: PlasticLength: Approx. 64mm/2.51inchNormally Closed / Normally OpenDetection 360Detection Distance: 20-30m/65.62-98.43ftTransmitting Frequency: 315/433mhzWorking 100vQuiescent Current: 0.5uaAlarm Current: 15maWorking Temperature: -10~60℃Package Includes:1 Set WindowNote:1.Please enable 1-2cm errors thanks to handbook measurement, just remember to do not mind earlier than you order.2.Due to the variation between diversified monitors, the image might not replicate the particular shade of the item.