<p> The Simjar Key finder helps you quickly find lost keys, pets, cats, dogs, remote controls, wallets, glasses, canes and other items that are easily lost. Just click on the color code button and the beep and flash will guide you to the missing item. </p><p> Powerful RF penetrates walls, leather, doors and more. Whether it's in another room, a sofa cushion or a blanket, you can quickly find lost items within 100 feet. The receiver can send up to 80 decibels, so it's easy to find lost objects.</p><p><b><br> How to use:</b><br/>- Use a key ring or double-sided tape to connect the color-coded receiver to items that are often lost<br/> - Press and release the corresponding color-coded button on the remote control<br/> - If the receiver is in range, it will beep and the LED will flash<br/> - If you don't hear a click, change your location or use a new battery and press the button again<br/>- Our item tracker can attach DIY mode stickers or handwritten stickers to the buttons on the corresponding letters on the transmitter. It is more convenient to remember lost items</p> <p><b>Specifications:</b><br/>- Transmitter size: 3.3x1.54x0.43in (84 x 39 x 11mm) <br/> - Receiver size: 1.97x1.42x0.43in (50 x 36 x 11 mm)<br/> - Frequency: 433.92 MHz<br/> - Sound volume: 75-80 dB<br/> - Working range: 30-40 meters/ 98-131 ft (open space)<br/> - Gross weight: 4.76 oz (135g) <br/> - Battery: CR2032 (for receiver, included)<br/> - Housing materia: ABS<br/></p> <p><b>Package Content:</b><br/> - 2 x Transmitters<br/> - 4 x Receivers<br/>- 1 x DIY Stickers <br/>- 1 x User Manual<br/>- 6 x CR2032<br/>- 4 x Key Rings（Circumference: 1.85inch）<br/>- 2 x Key Rings（Circumference: 5.9inch）<br/>- 2 x Key Rings（Circumference: 2.95inch）<br/></p>