Smoke Detector Sensor

BCL020 - Smoke Detector Sensor Ideal for protection against fire and smoke hazards. Can be mounted on ceiling or wall. Low-battery warning system and alarm test function. SPECIFICATIONS Operating Voltage: 9V battery Alarm Sound: > 85dB Ambient Temperature: -10 to 50 degrees Protection Area: 12 m height, 80 square meters ATTENTION - I do not deliver in person; all items are shipped via CTT; - This item has been properly inspected prior to being listed for sale; SHIPPING - Via standard mail, blue mail, registered mail, or cash-on-delivery, with postage fees charged according to the current CTT rate table; - Shipped on the next business day following payment confirmation; PAYMENT - Can be made via MBWay or bank transfer; - For standard mail, blue mail, or registered mail, payment must be made in advance; - For cash-on-delivery, postage fees must be paid in advance;