Mains powered optical smoke alarm from EI, available as a replacement smoke alarm detector head or complete with mounting base plate. This is the latest Ei146"RC" detector - now capable of interlinking with the Ei1529RC remote control switch. The Ei146RC replaces the previous Ei146 model but can still be used to extend and interlink to an existing Ei140 system.
Power: 230V mains powered with back-up battery
Backup Battery: 9V alkaline battery (included)
Warranty: 5 year warranty
Available in two versions:
Ei146RC optical smoke alarm with Easi-fit base for quick installation (for new installations by a qualified electrician)
Replacement Ei146 optical smoke alarm detector head (supplied without base)
A maximum of 12 units can be interlinked via 3 core cable
Other smoke alarms that can be interlinked include:
Mains powered Ei Electronics smoke and heat alarms require a 230V AC power supply and up to 12 alarms can be hardwire interlinked in one system.
To obtain a mains power supply, each alarm can be connected to the nearest lighting circuit using 2 core and earth cable with a separate, dedicated interlink cable connecting all alarms. However, if possible it is recommended that the alarms are all powered from a dedicated circuit from the distribution board using 3 core and earth cable for safety during maintenance, as the interlink cable will carry power from live alarms on other power circuits. Please see the diagram below:-
Q. Do I need an ionisation or optical smoke alarm?
We recommend using an optical smoke alarm in hallways, as these are less likely to go off because of cooking fumes from a connected kitchen. Optical smoke alarms are also ideal for living rooms, dining rooms, bedrooms, as they are good at detecting smouldering fires from soft furnishings. For landings we recommend ionisation alarms. Heat alarms are designed for kitchens and garages. No alarms should be installed in bathrooms.
Q. Which interconnecting smoke alarms would be suitable to connect an upstairs landing, downstairs hallway and a kitchen?
The Ei 140 series with radio-interlink bases would be suitable for this application:
Ei168RC/141 ionisation: best for landings Ei168RC/146 optical: best for hallway, living rooms etc Ei168RC/144 heat detector: best for kitchen and garage
Alternatively the Ei160 series (again with radio-interlink bases):
Ei168RC/161RC ionisation: best for landings Ei168RC/166RC optical: best for hallway, living rooms etc Ei168RC/164RC heat detector: best for kitchen and garage
There are also battery operated radio-interlinked smoke alarms available (See Ei3100RF and Ei600RF series)
Q. What type of electrical cable is required to carry the mains supply and trigger signal for the wired alarms?
For the mains supply of the first unit a 2-core earth cable would be sufficient. For the connection between the alarms a 3-core earth cable would be required
Q. Can I link a CO detector with a Ei140 smoke alarm?
Yes, we recommend the Ei261EN. You should also install a Ei159 locator to allow you to find out if the alarm was triggered by CO gas or by fire.
Q. How do you wire in the Ei140/Ei160 series of smoke alarms?
To wire the units correctly you would use 2 core and earth cable to the first unit and 3 core and earth to the interconnected units. The alarms do not have to be earthed but a brass screw connector is provided so that the earth can be safety terminated.