| This unit is housed in a lockable powder coated sheet metal enclosure and includes a mains to 24 V DC power supply with backup battery charger. The facia displays all control buttons and indication LEDs. All zone and sounder circuits are monitored for open and short circuit fault conditions. These are also provided with lightning suppression devices. In addition to the two sounder outputs, there are as standard, a fire brigade contact (voltage reversal), a change-over alarm contact per zone, a common fault change-over contact, a common fire change-over contact and a gas area output for connection to the TEC047 Extinguishant Release Control Panel.