Modbus Module Dimensions W x H x D: 50 x 69 x 60 mm Inputs: 3 Analogue Inputs, abbreviated: 3 AI Operating temperature: -5...+55 °C Manufacturer Article n°: MR-SM3 Operating voltage: 24 VAC/DC Series: MR Weight: 110 g Mounting: DIN Rail Protection rating: IP40 / IP20 No. of analogue inputs: 3