The transponder must have its own power supply at + 12VDC.
Consumption : 12mA max.
Max detection speed : 360 km/h (223.7 mph)
Max detection height : 2.8 m (9 ft)
Operating temperature range : -20°C -> 70°C (-4°F -> +158°F)
Dimensions : 80 x 50 x 23 mm (3.1 x 1.9 x 0.9 in)
Weight : 80 g (2.8 oz)
Fixing : mounting holes in the transponder frame
The LED flashes 4 times in succession every 10 seconds if the power supply is good.