Features:OOTDTY brand new and excessive 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, although the door is in the water, the need not be interrupted.Strong adsorption force, the magnet finish is made of solid 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/2.51inchDetectionDetection 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 allow 1-2cm mistakes due to manual measurement, just be sure you do not intellect earlier than you order.2.Due to the adaptation between assorted monitors, the picture may not replicate the particular coloration of the item.