1. Simple/Clear operation panel2. Robust Shell, durable 3. High-reliability, dual relay output 4. Perfect anti-interference SNB Series: 1. Fit for kinds of Machinery Fields*Comprise of emitter(transmitter), receiver, controller, connection cables and mounting fittings. 2. SNB series's specification * Fast response time <20ms.* LED indicator,easy to algin, display real-time working status.* Auto ...