Features Excellent Performance: High sensitivity ensures accurate measurement results, detecting radiation levels from 0.08 μSv/h to 9999 μSv/h for reliable monitoring Multi Testing Capability: Combines β, γ, and X-ray radiation testing in one portable device, offering versatile functionality for various radiation detection needs Timely Alarm Function: Equipped with audible and visual alarms to alert you when radiation is detected, enabling prompt responses to potential hazards User-Friendly Design: Features a rechargeable battery with USB and car charger compatibility, making it easy to maintain and use in any setting Compact and Lightweight: Easily portable, this device can monitor radiation levels in toys, antiques, building materials, and food, ensuring safety wherever you go Features: 1、Smart Key Finder: Never lose your keys again with this key finder. Simply attach the receiver to your keys and use the receiver to locate them easily. No more wasting time searching for lost keys. 2、Remote Control Finder: This key finder can also be used to locate your misplaced remote control. Just pr the button on the remote control and follow the sound to find it quickly. 3、Easy to Operate: This key finder is simple to set up and use. Just attach the receiver to your belongings and pr the corresponding button on the remote control to make the receiver emit a beeping sound. No complicated setup required. 4、Long Tracking Distance: With a tracking distance of 30？40 meters, this key finder can help you locate your lost items even if they are far away. No more fration and str caused by misplaced belongings. 5、 and Reliable: Made of premium ABS material, this key finder is sturdy and built to last. It can withstand daily use and is for helping you find your keys, wallet, phone, glasses, and even your pet. Specification: Item Type: Key Finder Material: ABS Volume: 75-80dB Search Distance: Approx. 30 ~ 40m / 98.43 ~ 131.23ft Frequency: 433.92MHz Transmitter Power Supply: 2 x AAA battery, not included. Receiver: 4 x CR2032 battery, 1pc battery for each of the 4 receivers, and the batterires are not included. Package List: 1 x Transmitter 4 x Receiver 1 x Bracket 2 x Adhesive 1 x Item Sticker 1 x Writing Sticker 4 x Keyring 1 x Cover Opener 1 x User Manual Package List 1 x Transmitter 4 x Receiver 1 x Bracket 2 x Adhesive 1 x Item Sticker 1 x Writing Sticker 4 x Keyring 1 x Cover Opener 1 x User Manual