Acu-Trol 744000390

This Acu-Trol ORP Sensor has a gold tip for use in salt water pools and is used on Acu-Trol AK110, AK2100, AK600 and Control-O-Matic PoolWarden Controllers. They have a removable bulb guard, red housing ring, and include a rubber o-ring replacement. It replaces older Acu-Trol probes with red tops.The Acu-Trol industria