This product has been discontinued.
Longlife Lithium Battery
0 to 40°C
15% to 95% Relative Humidity
If one alarm was to malfunction the other units would not be affected, if it was due to alarm failure. If the fault was with the radio-interlinking signal, then all alarms that are in the chain after the faulty alarm would be affected and they would not go off.
If you have any questions or would like more information about this product you can ask one of our specialists.