The CS85-GSM LCD433 is an intelligent voice anti-theft alarm system combining advanced GSM digital signal technology with peripheral sensor detection. When armed, the system automatically detects intruders and immediately sends voice calls or text messages to designated contacts with incident location details.

• Preset 2 groups of message calls with automatic SMS alarm delivery
• Built-in lithium rechargeable battery with power failure alarm function
• 8 wired and 99 wireless zones for comprehensive coverage
• Multiple arming modes: instant, delayed, 24-hour, remote control, and phone-based
• LCD graphic display with built-in calendar clock for intuitive operation
• Full-time human voice prompts and duplex intercom functionality
• Wireless transmission distance of 200-300 meters in open areas
• Support for Tuya app and Alexa voice control integration
• Built-in GSM module supports 850/900/1800/1900MHz frequencies

Ideal for residential properties with elderly or children, commercial establishments, retail stores, banks, financial rooms, factories, schools, and any location requiring reliable security protection.

Requires SIM card with 2G data network for phone call and SMS alarm functionality. System operates effectively without SIM card but without remote notification capabilities. Compatible with GSM Alarm app available on Apple and Android markets.