... features. . Features:1,Support the access of wireless (GSM ), PSTN, Phone. 2,Supports GSM, CDMA two kinds of wireless communication standard. 3 ... module to each channel. GSM800 realize the integrate of Wireless(GSM or CDMA) and PSTN. 3, High security: It adopts ... , Weight: 500gThe environmental instructions for using: 1, Temperature Operation: 0 to 80°C 2, Temperature Storage: -35°C to 120°C 3 ...