The mV Controller 2001 C is designed for monitoring and controlling the redox-potential (or ORP, oxidation-reduction-potential) in aquaria.

The unit has a broad controlling range from a -500 to a +500 mV and a measuring range from -1000 to +1000 mV.
It can be used to control the supply of ozone in salt water aquaria and/or for the control of the nitrate removal in anaerobic biological filters (Aqua Medic Nitratereductor).
The unit is supplied with a BNC connection for the mV probe (not included).
The use of an original Aqua Medic plastic shafted electrode is recommended.