27 March 2020: All Mitre 10 and Mitre 10 MEGA stores are closed to the public in line with the New Zealand government's action to manage COVID-19.
Some stores will supply a limited range of essential materials to existing trade customers for essential services only. More details here.
For more information on our Covid-19 status click here.
Photoelectric Smoke Alarm 9 Volt White
SKU: 240468MODEL: L136001
Available at Mitre 10 MEGA stores.
Photoelectric alarms have a sensing chamber which uses a beam of light and a light sensor. When smoke enters the chamber it changes the amount of light that reaches the sensor and the alarm sounds when the smoke reaches a certain level. They are best at detecting slow burning fires which burn for hours before bursting into flame.
Rated 1 out of
Keep going offI bought five of these and three of them now regularly alarm for no reason, within five months of purchase and on a new battery. The manual advises cleaning dust using a vacuum - I do this and it's not the problem.