Description/Features: Stable frequency and performance of the sound meter; Wide working voltage range; Good product consistency high cost-effectiveness. Please refer to our pin order in detail compare it with your host's see if is same. Wireless transmitter module, transmitter, board, 3-12v universal voltage Foot position (from left right) instructions for use: Function Description Names: 1 Atad data input pin 2 Vcc power supply positive pole 3 Gnd negative transmission module has a total three external interfaces, which are represented English. "vcc" represents pole supply, "atad" input, "gnd" supply. Specifications: Model: MX-F01 voltage: 3-12V frequency: 433.92MHz Standby current: 0mA 20-28mA distance: Greater than500m (sensitivity open receiving board above -103dBm) Output power: 16dBm (40mW) rate: Less than10Kbps Modulation method: Ook (amplitude modulation) temperature: -10 +70 ?br> Due different batches, there may be differences appearance printed text, will not affect use. Material: PCB colour: As Shown Package Contents: x (Single Transmission) Reception) Only content, other products included. Note: Light reflection displays cause color item picture little from real thing. measurement allowed error +/- 1-3cm.