The 81716512 is a pneumatic 2-hand control relay module designed to meet safety requirements for dangerous machinery operations. It operates at pressures from 2 to 8 bar with an orifice diameter of 2.7 mm and delivers a flow of 200 NI/min at 6 bars, ensuring reliable pneumatic signal transmission. The device features an operating force of 15 N at 6 bars with an effective travel of 1 mm, and connects via push-in connectors for Ø 4 mm semi-rigid tubing (NFE 49100). Operating across a temperature range of -5°C to +50°C with mechanical life exceeding 5 million operations, this relay is ideal for industrial automation systems requiring dual-hand safety interlocks and compliance with machinery safety directives.