Model ei141 ionisation, Installation & placement, Technical specification – Ei Electronics Ei141 User Manual
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Shannon Free Zone, Shannon, Co. Clare, Ireland.
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+353 61 471277
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Web:
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E & OE As our policy is one of continuous product development, we reserve the right to alter product details without prior notice
.
Ei141 DataSht RevB
 
 
Model
Ei141 Ionisation
Installation & Placement 
 
Wiring for Interconnected Alarms
Be very careful about correctly wiring the alarms as mixing Live and Neutral 
will blow/damage interconnected alarms. 
 
Alarms should be placed in accordance with the general guidelines shown in 
the diagram above. These recommendations are based on the problem of 
areas of “dead air” close to corners of rooms and apexes of ceilings, which 
could result in the prevention of smoke reaching the smoke detector 
 
Please consult instruction booklet for specific installation details 
Important Precaution:
Do not install the actual smoke/heat 
alarm itself in new or renovated 
buildings until all work is completed 
(including floor coverings) and the 
building has been fully cleaned. 
The wiring can be installed when 
appropriate. (Excessive dust and 
debris from building work can 
contaminate the smoke chamber 
and cause problems, and it will also 
invalidate the guarantee). If it must 
be installed, cover it completely, 
particularly around the edges, with 
a dust cover (eg. a plastic bag), 
until all cleaning is finished.. 
Connect wires to the unit as in 
wiring diagram. All wiring must 
comply with local codes. 
 
 
Technical Specification 
 
Sensor
Ionisation
 
Sensitivity:
Complies with BS 5446 Part 1: 
2000 
 
Source: 
Americium 241
 
Button Test:
Simulates the effect of smoke and 
checks electronics and horn. 
 
Supply Voltage: 
230V AC
 
Battery back up: 
9V Alkaline Battery
 
Power-On Indicator:
Continuous green LED
 
Alarm: 
Electronic Piezoelectric horn 
in unit 
 
Alarm Sound Output:
85dB (minimum) at 3m
 
Alarm Status:
Red LED flashes every second on
unit sensing fire
 
 
Temperature Range:
0° to 40°C
 
Humidity Range:
15% to 95% Relative Humidity
 
Interconnect:
Up to 12 interconnected mains 
powered easi-fit smoke or heat 
alarms, along with an EI128 relay 
base 
 
Fixing:
Easi-Fit mounting base
 
Plastic material:
UL94VO flame retardant
 
Dimensions: 
145mm diameter x 40mm depth
 
Weight: 
305g
 
Warranty:
5 year (limited) warranty
 
Approvals:
Kitemarked to BS EN 14604:2005, 
CE Approved
 
Specifications are subject to change 
