Features Increase the analog sub-tone digital sub-tone function, strong anti-interference ability, signal transmission is not interfered. The generator shell is made of ABS material, which can resist oxidation and corrosion and increase the service life. Small in size and light in weight, it can be operated with one hand, allowing the operator to reduce wrist fatigue. The audio generator module is integrally formed with a glossy shell without burrs and smoothly installation. Widely used in aviation, wireless communication, automotive electronics, manufacturing and other fields. Specification:Item Type: Signal Generator Material: ABS Frequency: 0.5MHZ‑470MHZ Signal Strength: -70-132dBm Built-in 800Hz audio modulation The new model adds analog sub-tone digital sub-tone function. Use 8--12V DC power supply Package List:1 x RF Signal Generator1 x Bracket1 x User Manual Note:1. The frequency is 7 digits, such as 439.6000MHZ will display 4396000KHZ 2. Signal strength ‑70‑‑132dBm is valid, other values are invalid 3. Audio modulation is about 800Hz, other values are invalid 4. Please note that the colors of the buttons will be sent randomly, and make sure you will not mind before ordering. Package List 1 x RF Signal Generator 1 x Bracket 1 x User Manual