Sell Panasonic Stand Alone Smoke Detector best price

🗸Fast smoke detection by photo electric light Suitable for accommodation Or general business 🗸No wiring required for installation 🗸The noise level is 87dB at a distance of 1 meter. Can be heard even for children and old people. 🗸Noise level at 84dB at a distance of 40 meters 🗸Battery life up to 10 years, 3V lithium 🗸Send an automatic alarm every 40 seconds when the battery is low. Or there is a problem