... .3. Dc power supply, dc voltage/ammeter, logic level output and instructions, etcDc voltage: 0 ~ 15V adjustable output: dc current: 0 ... to 20mA adjustable output; Dc digital voltmeter/ammeter: voltmeter range 0 ~ 200V, ... level instructions, LED digital tube, direction indicator, yet, dc 24V relays, signal a number.4. SM10 host training module ...