GSM and PSTN alarm system,gsm pstn system,gsm pstn alarm system,gsm security system GSM and PSTN alarm system,gsm pstn system,gsm pstn alarm system,gsm security systemSystem ... records from panel.l Allow up to 99 wireless defense zones and 4 wired zones.l Each can be defined as one ... , triple-band, quad-band GSM/GPRS industrial graded module, stable and reliable. Wireless auto dial alarm system