... ,billboards,farms and other unattended positions Name: Wireless alarm system auto dial Memo: Wireless alarm system, auto-dial alarm, security alarm system Main features:• Anti-interfere function. • 90 programmable ... -10~40°C • Capacity for Wireless Device:160pcsStandard pack components 1 main panel, 1 wireless PIR detector, 1 wireless door sensor, 1 siren, 2 ...