It's very simple to use- and works great. We use it as a call button for my disabled father whose room is on the other side of the house. But it would work as a wireless doorbell too.You need to replace the 3 watch batteries about every 6 months and there are no instructions for doing so. btw use a box cutter to pop it open.
Accurate No-Touch Thermometer For Adults And Kids With Fever Alert And Memory Recall
47 Review
Digital Flexi-Tip Thermometer - Accurate Fever Detection For Adults And Kids - Quick And Reliable Reading With Smiley Indicator And Protective Case By IProvรจnยฎ
44 Review
Smart bracelet Xiaomi Mi Smart Band 5 RU, black
148 Review
Impressive IPROVEN BPM-417 - Digital Wrist Blood Pressure Monitor For Home Use - Large Cuff And Heart Rate Monitor - Real-Time BP Reading With Wrist Guide, Movement Sensor, And Backlight
42 Review