The Ei105R Optical Smoke Alarm is designed to connect to a panel for its low voltage power supply (10.2-14V DC) but also as a trigger via a built in relay. When smoke is detected, the horn will sound and the relay will switch.
The Ei105R may operate as a standalone Alarm or may be hardwire interconnected to other Ei low voltage Alarms from the same range. In an interconnected system, an Alarm sensing fire will cause all others to alarm and switch contact (depending on installation configuration). Up to 12 Alarms from the same range can be interconnected.
The Test button allows the user to check the operation of the Alarm. This will check the sensor, sounder, internal circuitry and relay. When the Test button is pressed, the horn will sound within 10 seconds and the relay contacts will change over about 4 seconds after the horn sounds. All interconnected Alarms should sound within 10 seconds. When the button is released, the horn will stop sounding and the relay contacts will change back 4 seconds later.
The Ei105R self-checks its chamber sensor every 40 seconds. Any fault condition found will be indicated by sound beeps.