SIL/PL-compliant signaling devices As a leading manufacturer of industrial signaling solutions we offer both optical and acoustic SIL/PL-compliant signaling devices. As a rule, alarm equipment performs [...] Definition SIL / PL Safety Integrity Level (SIL): is defined as a relative level of risk-reduction provided by a safety function, or to specify a target level of risk reduction. In simple terms, SIL is a m [...] measurement of performance required for a safety instrumented function (SIF). Performance Level (PL): is a value used to define the ability of safety-related parts of control systems to perform a safety