This item is a key locator system that includes four receivers for various purposes. It helps you quickly locate lost keys, remote controls, wallets, glasses, and other small items. The compact design makes it easy to carry, and it can be attached or glued to different surfaces. Features - Works through walls and floors, with a range of up to 40 meters - High-gloss finish with a silver frame - Lightweight and portable, easy to attach or glue - One transmitter with four large buttons, each paired to a receiver - Suitable for personal use, family use, gifts, and promotional purposes Specifications - Transmitter size: 105 x 40 x 13mm - Receiver size: 50 x 36 x 11mm - Transmitter battery: 2 x AAA, 1.5V (not included) - Receiver battery: 1 x CR2032, 3V (included) - Sound output: 75-80 dB - Transmission range: 30-40 meters - Frequency: 433.92 MHz - Housing material: ABS plastic