Description: Inbuilt Quad-band 850/900/1800/1900Mhz GSM module. Up to1000 authorized phone numbers for maximum 200 room owners; No call charges. the GSM Access Control rejects the call from authorized number then carries out the open door action on the first 'ring'; Can open the door for visitors where you are, no distance limit; user friendly design Support RFID Card to open the door, each room has an Admin Password and 5 authorized Phone Numbers and 5 RFID Card 2 Relay Outputs (NC/NO), Relay close time is programmable (1~300 seconds), compatible with Electronic Locks and CCTV Camera Specification: Material: Alloy DC Power Supply: Standard adapter: DC 12V/1.5A Power consumption: Standby:12V/70mA; Working Max.: 12V/300mA GSM Frequency: 850/900/1800/1900Mhz Transmit power: Class 4 (2W) at EGSM 900 and EGSM 850; Class 1 (1W) at GSM 1800 and GSM 1900 SIM interface: Supporting 3V SIM Card External antenna: SMA Antenna interface, 50 Ohm Max.Autorized Number: 1000 Max. Room Number: 200 Max. RFID Card: 1000, non-contact RFID Card(M1 S50) Relay Outputs: 2, Rated: 5A/30VDC,5A/250VAC Temperature range: -10-+70 °C Humidity range: Relative humidity 95% (condensation free) Dimension: approx. 275x130x40mm/10.83x5.12x1.57 inches Package Includes: 1 Piece Door Access Control Host 1 Pack Screw 1 Piece Manual Note: Countries and regions that are disable 2G: Thailand, Singapore, Japan, South Korea, Australia, New Zealand, Taiwan, Fiji and other 2G countries and regions can not be used