Features : Stop against fault Measurement : No Display, All inputs are switch Protection : LLOP, HWT, Low Fuel , Chg/ V-Belt Battery Supply : 7- 35 VDC Housing : Din Standard 72×72 mm Available in : ESU 01 12 V :- 12 V Operating Genset & Energize to Stop. ESU 01 ER 12 V :- 12 V Operating Genset & Energize to Run. ESU 01 24 V :- 24 V Operating Genset & Energize to Stop. ESU 01 ER 24 V :- 24 V Operating Genset & Energize to Run.