Features:OOTDTY brand new and excessive qualityThe for shell is product of ABS material, which is wear-resistant and durable, and isn't smooth to damage.Sealed design, dustproof and waterproof, even supposing the door is in the water, the need not be interrupted.Strong adsorption force, the magnet end is made of solid potting to make the extra sensitiveLight weight, smooth 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 mistakes due to handbook measurement, just remember to don't intellect before you order.2.Due to the difference between diversified monitors, the image might not reflect the actual coloration of the item.