Boundary wire antenna Automower®420Automower®430XAutomower®440Automower®450XOperating Frequency Band, Hz 100-80000 100-80000 100-80000 100-80000Maximum magnetic field, dBuA/m24 82 82 82 82Maximum Radio-frequency power25, mW@60m<25 <25 <25 <25Noise emissions measured in the environ-ment as sound power26Automower®420Automower®430XAutomower®440Automower®450XMeasured sound power noise level, dB (A) 57 57 56 58Noise emissions uncertainties, KWA dB (A) 1 1 1 1Guaranteed sound power noise level dB (A) 58 58 56 59Sound pressure noise level at the operator’sear27, dB (A)46 46 45 47Mowing Automower®420Automower®430XAutomower®440Automower®450XCutting system 3 pivoted cutting bladesBlade motor speed, rpm 2300 2300 2300 2300Power consumption during cutting, W +/- 20%30 30 30 35Cutting height, cm / in 2-6 / 0.8-2.4 2-6 / 0.8-2.4 2-6 / 0.8-2.4 2-6 / 0.8-2.4Cutting width, cm / in 24 / 9.4 24 / 9.4 24 / 9.4 24 / 9.4Narrowest possible passage, cm / in 60 / 24 60 / 24 60 / 24 60 / 24Maximum angle for work area, % 45 45 45 45Maximum angle for boundary wire, % 15 15 15 15Maximum length boundary wire, m / ft 800 / 2600 800 / 2600 800 / 2600 800 / 2600Maximum length guide loop, m / ft 400 / 1300 400 / 1300 400 / 1300 400 / 1300Maximum distance to boundary wire m / ft. 35 / 115 35 / 115 35 / 115 35 / 115Working capacity, m2 / acre(s), +/- 20% 2200 / 0.55 3200 / 0.8 4000 / 1 5000 / 1.25IP-classification Automower®420Automower®430XAutomower®440Automower®450XRobotic lawn mower IPX4 IPX4 IPX4 IPX4Charging station IPX1 IPX1 IPX1 IPX1Power supply IP44 IP44 IP44 IP4424 Measured according to EN 303 447.25 Maximum active output power to antennas in the frequency band in which the radio equipment operates.26 Determined according to Directive 2006/42/EC and standard EN 50636-2-107.27 Sound pressure noise uncertainties KpA, 2-4 dB (A)1418 - 007 - 17.09.2020 Technical data - 27