Ei Electronics Set of 4 smoke detectors Ei650 10-year detector

• Alarm when smoke enters the optical smoke chamber • built-in, 85dB(A) strong Piezo Alarm • Silent Standby bedroom fit, no annoying Blinking • VdS-approved, DIN EN 14604, seal of quality, Q • permanently installed 3-volt lithium battery with a service life of 10 years smoke alarms save lives! You choose the test winner of Stiftung Warentest 1/2013