* Free chlorine, total Chlorine measurement.
* Range : 0 to 3.5 mg/L (ppm).
* Range : Auto range.
* Measuring principal : Photo meter method.
* Light source : LED, 525 nm.
* Control/Alarm/Monitor via GSM mobile phone, with no distance limitation.
* 8 channels RS232 input, 8 relay outputs, 8 switch inputs.
* 8 channels RS232 input can cooperate full line LUTRON instruments (build RS232 output), it will
 display the real value with the measuring unit on mobile phone.
* Analog channel Hi/Lo alarm warning setting.