GSM 900MHz (transmit 890-915MHz / receive 935-960MHz) / GSM 1800MHz (transmit 1710-17850MHz / receive 1805-1880MHz). quad band: GSM 850/900/1800/1900MHZ. dual band: GSM 900MHz/1800MHz. It can be connected to the market with voice box, burglar alarm host, ordering software.
The "(/Quad Band)GSM Desktop Phone Fixed Wireless Terminal Support Alarm System BL" would be most suitable in offices requiring a reliable, scalable, and cost-effective communication system with advanced security features.
