Feature: 1. FREQUENCY AND SIGNAL STRENGTH: Radio signal generator has the frequency of 0.5M to 470MHz and the signal strength is of ‑70 to 132dBm. 2. MODULATION PROVIDING: Radio signal generator provides modulation including frequency modulation (FM). 3. PRACTICAL AND STABLE: FM radio intercom signal generator is practical and stable, which can improve your working efficiency. 4. WIDE APPLICATION: Signal generator can be widely used in aerospace, wireless communication, automotive electronics, manufacturing, education and teaching fields. 5. MADE OF ABS MATERIAL: Meter tester signal generator is made of ABS material with excellent workmanship and can be longer term use. Specification: Item Type: Signal Generator Material: ABS Frequency: 0.5M to 470MHz Signal Strength: -70 to 132dBm Built In: 800Hz Toning Modulation Use: 12VDC Power Supply Frequency 7 Digit Example: 439012.5KHZ Display 4390125. Package List: 1 x Signal Generator1 x Power Cord Note: This signal source is a weak signal and cannot be used to directly measure the signal frequency with an oscilloscope or frequency meter.