ID020 Transponder for Lap Timing System
Transponders are compatible only with Vostokelectronics timing system.
Size is approximately the same as AMB DP transponders.
Power: 6-10V DC; 25mA
(Transponders works and from lower voltage, but not radiate at full power, so at higher speed/distance to loop you can miss your laps).
I recommended power these transponders from LiPo balancing plug.