mPTX Direct Powered (DP) Transponder specifications: 

ID Numbers: Main 7 Digit ID / Alternative 7 Digit ID (ALT)

Stealth Case: 19x16x6mm, waterproof and fuel-proof

Mounting options: 3-hole tabs or direct fit (tabs removed)

Weight: 3g approximately (PCB and case without power lead fitted)

Temperature range: 0 - 50 degrees C (32 to 122 degrees F)

Signal transfer: Magnetic induction HD (Hybrid detection)

Power feed: From free RX channel CH3 or BATT (battery)

Power lead length: 190mm (approx. 7.5 inches)

Connection plug: Standard Servo plug

Operating voltage: 2.1v to 16v DC (reverse polarity protected)

Power consumption: Approximately 8mA @ 6v DC

PLEASE NOTE THIS TRANSPONDER WILL NOT OPERATE WITH THE LATEST RC4 FIRMWARE UPGRADE RC4.5 FIRMWARE