Specifications Acceleration electrode voltage 0V 200V continuously adjustable Deflection plate voltage 0V 40V continuously adjustable Voltage direction 3 ways Positive up-plate, off, positive down-plate Power supply AC 220V±10% 50Hz60Hz Power consumption Approx. 8VA Operating conditions Ambient temperature 0 to 40 Relative humidity 20% to 90%(at 40) Packing dimension (1 set) 21cm×14cm×21cm Packing weight (1 set) 1.5kg