... non-contact voltage output (for SSR drive, DC current output) Accuracy: ± 0.2% span Simple operation Heater-burn-out ... AC (resistive load) in applications in which the on-off frequency is low.Voltage output for SSR drive ... the current output.NAIS Temperature Controller KT4• 1/16 DIN size temperature controller• Size 48 ... systemA DC current 0/4 - 20mAA DC Voltage 0 to 1V, 0 to 5V, 1 to 5V, 0 to 10VKT2 ; ...