Product Name: Fixed Wireless PhoneModel Number: FWBC1Place of Origin: ChinaThe wireless fixed terminal based on GSM mobile cellular network, meets the 900 / 1,800 / 1,900MHz tri-band communication application. It has been widely employed in wireless CO trunks, IP super-market and the Cun-Cun-Tong telephone pervasion project in China due to its compact structure and stable performance. Features: 1) Industrial GSM module 2) Voice volume adjustable 3) Reverse-battery signal provided 4) Network management through SMS 5) Standby battery available 6) Preset local handset numbers and block numbers 7) Locks of network, SIM card, and the and card 8) Preset local prefix and IP access number 9) GPRS wireless online 10) Connected with telephone and charging system Specifications: 1) Frequency: GSM900 / 1,800 / 1,900MHz 2) Power supply: 110 ~ 240V AC, 9V DC 50/60Hz 3) Temperatures: -10°C ~ +50°C 4) Humidity: 10% ~ 95% 5) Pressures: 86 ~ 106KPa