Compact Size 1 DIN Module (17, 5mm) or 2 DIN modules (35mm), Supply 24ACDC or 240VAC, Digital adjustment of tempearture (2 red digit), Appropriate for temperature control inside electric panel (fan control e resistor control) , One or two indipendent NTC probe inputs, 2 relay outputs for ELTH352, 4-20mA second input (only for ELTH352).