... ,cost-effective,environmentally friendly 2000W/M ,634Btu/(ft2 * h) TES-1333 Solar Power MeterFEATURES:•Wide spectral range. •Excellent long term stability ... Memory and Read function. (99 sets.) •Auto Data memory (TES-1333) •RS232 interface to PC. (TES-1333R)APPLICATIONS:•Meteorology •agriculture •solar ... cable (for TES-1333R), CD software (For TES-1333R) TES-1333 Solar Power Meter