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6. Notes on batteries and rechargeable batteries
For safety reasons, the smoke detector should not be operated using recharge-
able batteries.
Due to the its low voltage (rechargeable battery = 1.2V, battery = 1.5V) the
smoke alarm may perceive that the rechargeable battery is low even though it
is fully charged. It then emits a soft signal tone every 48 seconds and the red
LED blinks three times every 48 seconds.
Therefore, please make sure that you only use high-quality alkaline batteries
(Conrad item no. 650117, for example. Order 3 batteries).
• Keep batteries (and rechargeable batteries) out of the reach of children.
• Make sure that the polarity is correct when inserting the batteries.
• Do not leave batteries/rechargeable batteries lying around as they could be swallowed by
children or pets. In such case seek immediate medical care.
• Leaking or damaged batteries/rechargeable batteries may cause acid burns, if they come
into contact with skin. Therefore, please make sure you use suitable protective gloves.
• Make sure that batteries/rechargeable batteries are not short-circuited, taken apart or
thrown into fire. They might explode!
• Conventional batteries must not be recharged. They might explode!
• If the device is not used for a longer period of time (when stored, for example), remove the
inserted batteries. This way, you can prevent the aging batteries from leaking and causing
damage.
For safety reasons, the device’s casing cannot be locked, if no batteries
have been inserted!