1. Power supply: 3.7V 2. Static current: Less than 10uA 3. : diameter 36x16MM 4. Sensor: infrared transmitting tube + receiving tube (one pair) 5. Alarm output: sound + high level (monitoring status is low level, outputs high level after alarm, and returns to low level after reset) 6. Volume: 85dB/1M 7. Sensitivity alarm range: 0.1-0.3 (M value) 8. Noise reduction function: yes (low level is effective) 9. Communication : high and low level (1. After the smoke alarm, it will send a continuous high level to the main board; 2. When the product is in the alarm state, the main board will send a low level for 5 seconds to the smoke, and then the smoke will enter Silent state, this state lasts until the smoke detector is reset) 10. Height limit for the top floor: 18mm; height limit for the lower floor: 8mm 11. Buzzer line length: 50mm basic skills After the product is powered on for 10 seconds, it enters the monitoring state; 1. When smoke is detected, the smoke detector sends a continuous high-level signal to the main board after the smoke detector alarms. This level lasts until the smoke dissipates, and the smoke detector returns to a low level after reset; 2. When the product is in the alarm state, the main board will give a low level for 5 seconds to the smoke sensor, and then the smoke sensor will enter the silence state, and this state will last until the smoke dissipates, and the smoke sensor will reset. Different batches may result in different product appearances, printed text, and colors, which do not affect usage. Colour:green Material:PCB Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
1. Power supply: 3.7V 2. Static current: Less than 10uA 3. : diameter 36x16MM 4. Sensor: infrared transmitting tube + receiving tube (one pair) 5. Alarm output: sound + high level (monitoring status is low level, outputs high level after alarm, and returns to low level after reset) 6. Volume: 85dB/1M 7. Sensitivity alarm range: 0.1-0.3 (M value) 8. Noise reduction function: yes (low level is effective) 9. Communication : high and low level (1. After the smoke alarm, it will send a continuous high level to the main board; 2. When the product is in the alarm state, the main board will send a low level for 5 seconds to the smoke, and then the smoke will enter Silent state, this state lasts until the smoke detector is reset) 10. Height limit for the top floor: 18mm; height limit for the lower floor: 8mm 11. Buzzer line length: 50mm basic skills After the product is powered on for 10 seconds, it enters the monitoring state; 1. When smoke is detected, the smoke detector sends a continuous high-level signal to the main board after the smoke detector alarms. This level lasts until the smoke dissipates, and the smoke detector returns to a low level after reset; 2. When the product is in the alarm state, the main board will give a low level for 5 seconds to the smoke sensor, and then the smoke sensor will enter the silence state, and this state will last until the smoke dissipates, and the smoke sensor will reset. Different batches may result in different product appearances, printed text, and colors, which do not affect usage. Colour:green Material:PCB Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
Sellers offer a range of delivery options, so you can choose the one that’s most convenient for you. Many sellers offer free delivery. You can always find the postage cost and estimated delivery date in a seller’s listing. You'll then be able to see a full list of delivery options during checkout. These can include: Express delivery, Standard delivery, Economy delivery, Click & Collect, Free local collection from seller.
Your options for returning an item vary depending on what you want to return, why you want to return it, and the seller's return policy. If the item is damaged or doesn't match the listing description, you can return it even if the seller's returns policy says they don't accept returns. If you've changed your mind and no longer want an item, you can still request a return, but the seller doesn't have to accept it. If the buyer changes their mind about a purchase and wants to return an item, they may need to pay return postage costs, depending on the seller's return policy. Sellers can provide a return postage address and additional return postage information for the buyer. Sellers pay for return postage if there's a problem with the item. For example, if the item doesn't match the listing description, is damaged or defective or is counterfeit. By law, customers in the European Union also have the right to cancel the purchase of an item within 14 days beginning from the day you receive, or a third party indicated by you (other than the carrier) receives, the last good ordered by you (if delivered separately). This applies to all products except for digital items (e.g. Digital Music) that are provided immediately to you with your acknowledgement, and other items such as video, DVD, audio, video games, Sex and Sensuality products and software products where the item has been unsealed.
Sellers have to offer a refund for certain items only if they are faulty, such as: Personalised items and custom-made items, Perishable items, Newspapers and magazines, Unwrapped CDs DVDs and computer software. If you used your PayPal balance or bank account to fund the original payment, the refunded money will go back to your PayPal account balance. If you used a credit or debit card to fund the original payment, the refunded money will go back to your card. The seller will effect the refund within three working days but it may take up to 30 days for Paypal to process the transfer. For payments funded partially by a card and partially by your balance/bank, the money taken from your card will go back to your card and the remainder will return to your PayPal balance.