Tiny Water Leakage Smart Sensor ZigBee for 7.03 USD without coupon

Here is the link (Aliexpress): Tiny Water Leakage Smart Sensor ZigBee

(Aliexpress coupons: https://couponsfromchina.com/aliexpress-coupons-2025/ )

I think it's a nice deal with good discount.

Image: https://ae01.alicdn.com/kf/S86c33ea4594b4f66830ab5f5b754561dR.jpg