... of voice message is 10 seconds. 10. Telephone (phone) long-distance telephone control for arming, disarming, monitoring, remote announcement ... via SMS. 15. Panel integrated with either dual-band, triple-band, quad-band GSM/GPRS industrial graded module, stable and reliable. ... 147*10mm. Standard pack components: main panel---1pcs ,GSM antenna built-in wireless PIR sensor---1pcs wireless door sensor ...