The 700D15796-615 is part of the Siemens Simatic S7-1500 range of automation controllers. It is a distributed I/O module with two digital inputs, two digital outputs, and four 24V DC outputs. It is a 15mm wide I/O module with up to four I/O modules daisy-chained to a single communication node. The modules are designed for rugged use in harsh environments and high shock and vibration conditions and provide diagnostic data for easy failure analysis. They are also designed to be very reliable, with an operating temperature range from -25 to +60°C and up to 500,000 cycles of operation.