mPTX Direct Powered Transponder. ID Numbers: Main 7 Digit ID/ALT 7 Digit ID System Compatibility: Compatible with AMBrc2, AMBrc3, Mylaps RC3 and Mylaps RC4 systems. (Pre firmware version 4.5). Stealth Case: 19 x 16 x 6 mm, waterproof and fuel-proof Mounting options: 3-hole tabs or direct fit (tabs removed) Weight: 3g approximately Temperature Range: 0° - 50°C (32° - 122° F) Signal: Magnetic induction Power Lead/Plug: RC 3-pin standard type (length approx 190mm) Operating voltage: 2.1V-16V DC (reverse polarity protected) Power consumption: Approximately 8mA @ 6V DC Display LED: Neon Blue