Standards met: EN50131-1, EN50130-4, EN50130-5Detection area: 16 m x 16 m, 90 degrees Temperature measurement range: -40 degrees C...+55 degrees CRadio communication range (open field) for ACU-280: up to 1600 [m].Radio communication range (open field) for ACU-220: up to 2000 [m].Radio communication range (open field) for ACU-270: up to 500 [m].RF communication range (open field) for ACU-120: up to 500 [m].IP degree of protection: IP54Start-up time: 40 [s]Degree of protection according to EN50131-2-4: Grade 2Microwave frequency: 24.125 [GHz]Temperature measurement accuracy: +/- degrees CExpected battery life (in years): up to 2Standby current consumption 75 [uA].Operating frequency band: 868.0 divided by 868.6 [MHz].Maximum current consumption: 30 [mA]Recommended installation height: 2,4 [m]Detectable speed of movement: 0.3...3 [m/s].