FrSky R9MM-OTA
Fly over the competition with this neat FrSky product!
The 900MHz R9MM-OTA receiver implements the ACCESS protocol and brings improved performance and supports wireless firmware updates (OTA = Over The Air), making binding to receivers even easier (no more holding the F/S button). As well as the convenience of checking the current receiver firmware version.
The R9 MM’s compact form factor design is also carried over to the OTA version supports inverted S.Port as well.
It also has 4 PWM outputs for use with normal servos, Just solder all the positive and negative servo leads to the GND and V_IN and the signal leads to the channel outputs. 
Specs:
| Dimensions | 16*10*2.8mm (L×W×H) |
| Weight | 0.7g (without antenna) |
| Number of Channels | Non-LBT (FCC) Version: 4/16CH (Telemetry) |
| Operating Voltage Range | DC 3.5V – 10V |
| Operating Current | 100mA@5V |
| Operating Range | Up to 10km or above |
| Compatibility | R9 series module (ACCESS protocol) |
