GX2140 is a Battery-only Operated GSM SMS 4 input alarm device. It has 4 inputs which allows you to monitor various sensors / switches / dry contact relays / burglar and fire alarm panels. It will send SMS text messages and optionally call up to 3 numbers. Usecases:

• Simple alarm system for places with no external power usage
• Rat-trap monitoring
• Letter-box monitoring
• Security call for public areas like parks, gardens
• Caravans / yachts / boats / warehouses
• Water Flooding / Water Loss / Tank Level Alarms
• Transformer theft