The Ei3105RF is an entirely wireless, interlinking optical smoke alarm from the Ei3100 series. If one alarm detects smoke, all alarms go off to give maximum warning time
Battery: 9V alkaline battery included
Warranty: 5 year Warranty
Wireless, interlinking smoke alarm. No base plate required
A maximum of 12 units can be interlinked
Can interlink with all other EI radio-interlinked alarms (Please note: only the test function of accessories Ei411H and Ei410 will work with this unit)
Suitable for installations complying to BS 5839-6: 2019 Grade F2
CE marked
Suitable for home or office
RF range 150 metres (minimum) in free space and up to 30 metres in buildings. Larger buildings can easily be covered, as the units can act as repeaters (daisy-chaining)
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 alarms where applicable. However, if possible it is recommended that any alarms connected via interlink cable 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. Are there any restrictions to the distance a radio-interlinked smoke alarm will work?
A.
Most radio-interlinked alarms have a range of 150 meters in an open space and up to 30 meters in buildings. The thickness of the walls and partitions will affect the travel distance of the signal.
Q. Do the three types of Ei3103 alarms interconnect with each other?
A.
Yes, the Ei3103 range, Ei3100RF - Ionisation Smoke Alarm Ei3105RF - Optical Smoke Alarm Ei3103RFU - Heat Alarm, interconnect with each other. If one sounds it will send a radio-signal to the other units and they will then be activated.
Q. Is the Ei3105RF a complete smoke alarm or does it need a base?
A.
The Ei3100RF series of battery operated smoke alarms are complete alarms, they do not require base plates to make them radio interlinked.
Q. Does the Ei3100 battery operated radio linked series have a hush button? If not how are false alarms dealt with?
A.
There are three different alarms that make up the Ei3100 series. The Ei3100 optical alarm does have a hush button, which can be pressed to reset the alarm should a false alarm occur. The ionisation and heat alarms do not have hush buttons. Should either of these alarms trigger a false alarm, due to cooking fumes for example, the alarm can be silenced using a folded newspaper to fan underneath it. To identify which alarm has triggered the false alarm it is the unit with a rapidly flashing red LED.
Q. Do batteries in radio-interlinked alarms expire quicker than those in normal alarms?
A.
Batteries in radio-interlinked alarms do expire quicker than in other smoke alarms. RF smoke alarms are, however, also available with a 10 year sealed long life lithium battery. This battery will last for the 10 year life of the smoke alarm.
22 customers have given this product an overall rating of 4.7 out of 5
Reviews by real customers
All of our product reviews are written by real customers that have purchased this product from us and are published without modification.
Rating: 5 / 5 Stars
Reviewed by: M R
Works fine, but secure syncing with other units tricky to verify.
Works fine, but the yellow LED that flashes to confirm radio sync is too quick, and with 12 units connected, it's almost impossible to confirm you are secure with the other alarms - although this is just a security gizmo - all alarms will sound if in radio range of each other. Slow down the flash rate please EI, with a long pause between the count. Better still, a bi-colour LED to indicate the count start ...
Published on: 1st July 2019
Rating: 4 / 5 Stars
Reviewed by: R B
Good product from a trusted company
I have used these smoke alarms before and only replaced them due to age.
Published on: 14th July 2018
Rating: 5 / 5 Stars
Reviewed by: S D
Product works as intended, easy to install, fast delivery
Published on: 27th April 2018
Rating: 3 / 5 Stars
Reviewed by: G W
Does what it is supposed too.
Published on: 19th April 2018
Rating: 5 / 5 Stars
Reviewed by: M L
Excellent
Published on: 21st February 2018
Rating: 5 / 5 Stars
Reviewed by: J P
Good quality, and in our weekly tests so far no failures yet
Published on: 2nd December 2017
Rating: 5 / 5 Stars
Reviewed by: P M
Quick delivery, well packaged
Published on: 13th November 2017
Rating: 5 / 5 Stars
Reviewed by: T H
Radio Interlinked is it's best selling point
works out of the box