Keep an eye on your system's status with this analogue input module from Siemens. It passes voltage, resistance and temperature readings to a PLC (such as 265-0918), packing plenty of monitoring functions into one device for hassle-free data collection. With its fast-mode conversion times of between 4 and 102ms, the unit handles measurements in a flash to stay up-to-date with process readings. Space for eight analogue inputs means it gathers signals from several sensors at once. Built-in diagnostic functions are on hand to help you quickly troubleshoot errors and minimise maintenance downtime. Look for input modules like this controlling HVAC equipment and metalworking systems.

• Voltage and resistance reading error of ±0.1% of input range, ensuring precise measurement conversion
• LEDs to clearly indicate power and processing faults
• Power loss of just 1.9W for energy-efficient data collection
• Compact size of 35 (W) x 147 (H) x 129mm (D) easily slots in beside a PLC

This unit works with shielded cables up to 800m in length. That means you can use it to reach across large areas without worrying about loss of performance.