WESPEC Original ATS520IR Generator Controller Automatic Transfer Control Panel DC Supply DC9V----36V Continuous MAX Accumulating Time 99999.9Hours(Min Store time:6min) Rotate speed sensor Frequency 200-10000Hz Operation Temperature -20-65℃ Storage Condition -30-80℃ Overall dimension 210mm*160mm*50mm Gross weight 0.500 kg Color Black Summary The controller is a dual power switching ATS controller, dual power intelligent switch module with programmable, automatic easurement,