Hanna Auto Doser Probe

The BL121 and PL121 use a multiparameter digital HI1036-1802 probe that incorporates pH, ORP, and temperature sensors along with a matching pin. 

The HI1036-1802 with the BL121 or PL121 pool controller helps to promote the health and safety of pool and spa water.

Please ensure that you calibrate a new probe to your auto doser before use.