Combing new technology with a familiar device. The Opti-Float level detector uses light instead of electricity, is non-mechanical and mercury free. Because the Opti-Float level detector uses fibre optic cable and light instead of copper wires and electricity, it can be used directly in explosive areas such as wastewater pump station wet wells. The float, cable and UL/CSA listed transceiver are very durable and have been tested to over 1,000,000 operations. This is 10 to 20 times the life of conventional floats.