Total Grow Control pH-EC Controller lighting-&-electrical-components Most users will only use

Most users will only use proportional control but the integral and derivative terms are there for advanced control

This pump has an electrical safety device built-in to prevent the pump from running dry

lumen output and irradiance

The RAY44 is designed to function as a complete sole-source lighting solution

Pump case is molded chemical resistant ABS

Total Grow Control pH-EC Controller lighting-&-electrical-components Most users will only useTotal Grow Control pH EC Controller Four Parameters Select the parameter you wish to measure from the menu. Choose from either Conductivity, pH, ORP, or flow from the menu. The user interface was designed under the principle that the user should not need to read the manual. Analog Outputs The 020 APHEC 1 is a loop powered device. It provides on isolated, scalable 4 20 mA output. The 4 20 mA output can be configured for PID control. Most users will