Features: -Can be powered by 4pcs AA batteries or DC12V power supply. -Suit both Left push/pull and Right push/pull door -High-quality iron, surface dusting technology, durable -Easy to install -User friendly -Support Various unlock method: key, ID KEY tag, button (Type A ), Remote controler(Optional) -Suit to connect all sorts of access control systems and video door systems -Suit for : home, offices, schools, hotels, factories, warehouses, etc -The outdoor reader is waterproof and indoor part is not waterproof Specifications: Voltage: DV 9 ~ 12V Action Current: less than 350mA Work temperature: -40 Celsius~70 Celsius Work humidity: less than 95% Response time for RFID tag unlock: less than 0.5S, read distance less than 20mm