Digital Light Meter Pro.(RS-232)TES-1339R 1).Dual Display, ... RS-232 Interface & Software Data Logging Digital Light Meter Pro.(RS-232)TES-1339R Dual Display, 4-digit LCD ... - average function. Comparator function. Auto power off function. RS232 Interface. CNS 5119 Class . DisplayDual display 4 digit LCD ... 35(H)mmWeight320gAccessoriesCarrying case, Instruction manual, Battery, CD software, RS232 Cable.