The Type 8181 Buoyancy Level Switch is built to detect levels and switch pumps, valves, PLC relays, and alarms. Applications include level control, minimum and maximum level monitoring, leak detection, pump protection, and overfill protection. The unit is designed for on/off control, with its stem incorporating a reed contact, float, and magnet. Depending on liquid level, the float actuates the reed contact. This contact triggers a remote alarm or controller via a 2- or 5-m two-wire shielded cable or relay module.
Burkert, 2602 McGaw Ave., Irvine, CA 92614. 949-223-3100. www.burkert.com.

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