Teknic is the manufacturer of Limit Monitor for Rotary Actuator. Teknic is an ISO 9001: 2000 certified company. The Limit Monitor for Rotary Actuator serves to signal the `open/closed` status of a fitting. This end position is communicated via two [maximum six] pressure-proof enclosed limit switches with the appropriate connection and mounting elements, or by intrinsically safe initiators. The Limit Monitors for Rotary Actuator can be used in hazardous [potentially explosive] areas in Zone 1 and 2 in accordance with the certified explosion sub-groups IIA, IIB and IIC and the temperature classes T5/T6 and in Zone 21 and 22 in accordance with the certified maximum surface temperature.