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Category 4 Rated - When used in combination the SQ4-A sensor and SQ4-C11 controller, meet category 4 / PLe / SIL3 requirements under ISO 13849-1:2008
Two Stage Detection – Dual sensing outputs provide both a warning and safety-critical output for differentiation of leak severity.
Multiple Sensor Inputs – Up to four sensors can be connected to each controller
Independent Operation – Sensor heads can also be used independently of the controller, meeting a Category 1 rating.
Safety Input Function – Allows daisy chaining of multiple controllers along with safety peripherals such as e-stop and door switches.