The use of the safety temperature limiter (STB) and safety temperature monitor (STW) can lead to hazards that could lead to injury to humans, damage to the environment or the destruction of production equipment and production goodsbe able to recognize and avert early and safely.It is the primary task of the company to reliably monitor thermal processes and to put the equipment into a safe operating condition in the event of a malfunction.The measured value at the analogue input can be acquired via different sensors or unit signals. A limit violation is signaled by the built-in LED K1 and K2 (red) for each channel and the built-in relay output alarm switches the system to a safe operating state (alarm range).The high requirements of DIN EN 61508 or DIN EN 13849 are met by a device concept whose 1oo2D structure ensures the safe detection of errors and can therefore also be used for applications that are subject to the new Machinery Directive 2006/42/EC.Protection control and control unit