Mains Ionisation Smoke Alarm - Kidde Firex 4870
- 230V Hard-wired smoke alarm
- Optional alkaline or rechargeable lithium back-up battery versions
- 6 year warranty
- A maximum of 24 units can be interconnected via signal cable
- Certified to BS EN 14604:2005 - view the certificate
- Fully conforming to BS 5839-6:2004 Grade D, E and F
- CE marked
- Neat Slimline Design
- LED display
- Test / Hush button
- Low battery warning chirp
- Supplied with dust cover (to protect unit temporarily if you carry out dusty work)
| Model Number | Type of unit | Type of interconnection |
| KE4973 | Optical Alarm | Hard wire interconnection |
| KE4985 | Optical Alarm with Rechargeable Lithium Cell | Hard wire interconnection |
| KE4899 | Heat Alarm | Hard wire interconnection |
| KE4892 | Heat Alarm with Rechargeable Lithium Cell | Hard wire interconnection |
| Model Number | Type of unit | Type of interconnection |
| KE1239HI | Ionisation Alarm with Alkaline Battery | Hard wire interconnection |
| KE1239HILL | Ionisation Alarm with Lithium Battery | Hard wire interconnection |
| KE2239HI | Optical Alarm with Alkaline Battery | Hard wire interconnection |
| KE2239HILL | Optical Alarm with Lithium Battery | Hard wire interconnection |
| KE3239HI | Heat Alarm with Alkaline Battery | Hard wire interconnection |
| KE3239HILL | Heat Alarm with Lithium Battery | Hard wire interconnection |
This is the technical data for the Mains Ionisation Smoke Alarm - Kidde Firex 4870.
| Dimensions (HxWxD) | 138x138x38mm |
|---|---|
| Back-Up Battery | Rechargeable Lithium |
| Sound Output | 85dB (minimum) at 3m |
| Temperature Range | 5 to 40°C |
Technical Data Sheets
The following technical data sheets are available for this product:
Q.Can I replace Kidde Firex 1240C alarms without having to replace the back plate?
A.Yes, the 1240C model has been superseded by the Kidde Firex 4870. They will fit on to the existing back plate and all the Firex models interconnect with each other.
Q.I purchased 4 alarms for my property recently via Safelinc's website. My electrician has installed them over the weekend.
However we have the following issue:
When you press the test button on the Carbon monoxide alarm the carbon monxide alarm goes off (but no alarm sound is heard on the other 3 connected smoke alarms).
This seems strange given that when you test any of the 3 smoke alarms, an alarm sound can be heard on the carbon monoxide alarm.
Is this meant to be like this?
The alarm models are:
1. Carbon Monoxide Firex 4985
2. Firex Ioisation 4881
3. Firex Ionisation 4870
4. Firex Optical 4985
A.The reason is the relevant British Standard which requires a different alarm sound for CO alarms in comparison to smoke alarms.
To achieve this, the CO alarm in question has a dual sound capability, meaning that
- if a smoke alarm is triggered or tested, the CO alarm detects that a smoke alarm has gone off and will activate one of its two internal sounders (sounding like a smoke alarm).
- if the CO alarm is tested or triggered, only the CO alarm sounds (sounding like a CO alarm). The smoke alarms are in this case not allowed to sound. As said above, this is a stipulation from BSI
Pricing & Availability
| Model | Stock Levels | Prices | Weight |
|---|---|---|---|
|
Kidde 4870 Alkaline Battery Backup Product Code: KE4870 |
In Stock
|
£14.02 ex VAT (£16.82 inc VAT) |
0.4kg |
|
Kidde 4881 Rechargeable Lithium Battery Backup Product Code: KE4881 |
In Stock
|
£22.01 ex VAT (£26.41 inc VAT) |
0.4kg |
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Unit 1, Farlesthorpe Road, Alford, Lincolnshire, LN13 9PS, United Kingdom