Features:OOTDTY brand new and high qualityThe for shell is manufactured from ABS material, which is wear-resistant and durable, and isn't smooth to damage.Sealed design, dustproof and waterproof, even if the door is within the water, the desire no longer be interrupted.Strong adsorption force, the magnet end is made of stable potting to make the extra sensitiveLight weight, clean to install, strong concealment.Suitable for wood door/glass door/plastic door.Specifications:Material: PlasticLength: Approx. 64mm/2.51inch/DetectionDetection Distance: 20-30m/65.62-98.43ftTransmitting Frequency: 315/433mhzWorkingQuiescent Current: 0.5uaAlarm Current: 15maWorking Temperature: -10~60℃Package Includes:1 Set WindowNote:1.Please enable 1-2cm errors due to handbook measurement, just remember to don't intellect earlier than you order.2.Due to the difference between assorted monitors, the picture won't mirror the particular colour of the item.