The Sensaphone FGD-0800 alarm dialer has eight (8) alarm inputs and can contact up too eight (8) different phone numbers in an alarm event. Each alarm input can monitor a Normally Open or Normally Closed sensor type, or a 2.8K thermistor (temperature) sensor like the FGD-0101. The FGD-0800 comes with a temperature sensor connected to Zone 1 and has capacity for six (6) C Cell batteries for battery back up in the event of a power outage. Out of the box the FGD-0800 will monitor for high noise alarms, temperature alarms and power outages.