Description/Features: Stable frequency and performance of the sound meter; Wide working voltage range; Good product consistency and high cost-effectiveness.Please refer to our pin order in detail and compare it with your host's pin order to see if it is the same.Wireless transmitter module, wireless transmitter, transmitter board, 3-12V universal voltageFoot position (from left to right) and instructions for use:Function Description of Foot Position Names:1 ATAD data input pin2 VCC power supply positive pole3 GND power supply negative poleThe transmission module has a total of three external interfaces, which are represented in English. "VCC" represents the positive pole of the power supply, "ATAD" represents the input, and "GND" represents the negative pole of the power supply.Specifications:Model: MX-F01Working voltage: 3-12VWorking frequency: 433.92MHzStandby current: 0mAWorking current: 20-28mATransmission distance: Greater than500m (sensitivity of open receiving board above -103dBm)Output power: 16dBm (40mW)Transmission rate: Less than10KbpsModulation method: OOK (amplitude modulation)Working temperature: -10 ~+70 Due to different batches, there may be differences in product appearance and printed text, which will not affect use.Material: PCBcolour: As ShownPackage Contents:1 x Module (Single Transmission)1 x Module (Single Reception)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.