The speedy bee TX500 5.8g video transmitter is designed for Mini FPV Racing Drones. It has 28x28mm@20x20mm M2 holes on it, easy to install.

Specifications
Frequency Channel: 5.8G 48CH
Output Power: 25mW/200mW/500mW
Working Current: 5V@150~550mA
Voltage out: 5V@max 250mA
Voltage in: 1S 3.5-5.5V
Video Input Impedance: 75 Ohm
Audio: Built-in MIC
Antenna Connector: MMCX
Weight: 4g (without antenna)
PCB Size: 28mm*28mm@20*20 M2

Package Included:
1 X TX500
1 X MMCX antenna
1 X MMCX to SMA Cable
1 X 1.0mm 6pin Cable
1 X Set of screws