Product decription:
Optical smoke alarms Optical (or photoelectric) alarms are light sensors. They contain an infra-red LED which, every few seconds, pulses a beam of light into the sensor chamber to check for smoke particles. As smoke enters, the infrared light is scattered onto the photodiode light receptor, triggering an alarm. They detect the larger smoke particles from slower smouldering fires. Pros: Good for bedrooms, landings and hallways, and near to kitchens as they aren't as prone to false alarms from cooking.
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FQA：
Q: Does your product have backup battery?
A: Yes, the alarm is mains power 220V-240V, with 9V battery backup.
Q:Could I put our own logo on the product?
A:Yes, in the customized order.
Q:What about the lead time for mass production?
A:Honestly, it depends on the order quantity and the season you place the order. Generally within 15 days for about 1000pcs.
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