C-HS60 is an automatic return-water controller. By comparing the temperature at a fixed measurement point with configured parameters, it intelligently starts and stops a return-water solenoid valve or pump to provide automatic pipe return-water circulation.The controller has two outputs, each of which can connect to return-water equipment; return water is triggered by temperature control or a flow switch.

BF-D215B+ Differential Temperature Controller is mainly used in solar forced circulation,Hot water circulation, return water system control, etc.,Can detect the temperature difference between [high-temperature point T1] (e.g., collector) and [low-temperature point T2] (e.g., water tank),When the [temperature difference] reaches the user's preset value,Automatically activates the relay output to control loads such as the [circulation pump], circulating hot and cold media between high- and low-temperature points,Thereby reducing the temperature difference between the high- and low-temperature zones (referred to as the temperature differential).

D-F228+ Differential Temperature Controller is mainly used in solar forced circulation,Hot water circulation, return water system control, etc.,Can detect the temperature difference between a [high-temperature point] (e.g., collector) and a [low-temperature point] (e.g., water tank),When the [temperature difference] reaches the user's preset value,Automatically activates the relay output to control loads such as the [circulation pump], circulating hot and cold media between high- and low-temperature points,Thereby reducing the temperature difference between the high- and low-temperature zones (referred to as the temperature differential).

C-215 is a solar heat-collection differential-temperature circulation controller with two outputs. The first output serves a hot-water system comprising a solar collector and a single tank, providing forced hot-water circulation by starting and stopping the differential-temperature circulation pump and valve.

C3-15B+ Upper/Lower-Limit Temperature Difference Controller, mainly used in hot water circulation and return-water system control.