GSM based Control Units - SMS & Missed Call Alerts
- uC based system interface with SIM 900A.
- AT Commands - sent on time out basis to check the SIM presence, currency presence, signal strength.
- Missed Call & SMS Alerts.
- Mobile number entry through keypad & LCD. 10 different numbers can be stored.
- External 8 digital Input Sensing (with 8 relay outputs) and updated through GSM modem.
- System can be custom-built, according to the customer requirement.