The UPM-5 is available in either a loop (4-20mA), A.C. or D.C. signal or external power version. The external powered versions can accommodate 4 relays, isolated DAC and power for the analog output (1 per channel). Other options include >30 signal conditioners and isolated input power options, as well as Ethernet, USB or RS485 and automatic/programmable colors (red/green/yellow) on each character. This model is available with either 1, 2, 3 or 4 channels. You can use the UPM as a DPM (Digital Panel Meter) for analog inputs and/or a universal timer/counter for 15 different functions, including Log & Anti-Log, Datum Zero, Frequency, etc. In addition, the included match functions (+, -, √, ÷, x) enable it to be used as a scientific counter. This model is available in 1-4 channels and can rival flatscreens with superior HMI/MMI functionality and ease of viewing/analysis of any combination of four variables (i.e. Volts/Amps/Watts/Hertz or temperature/pressure/pH/humidity). The four channel model can also be sued to monitor/control the product of the other 3 variables, making it ideal for the petrochemical industry. The UPM-5 replaces any 3" x 6" x 3" barmeter and is available in Nuclear Class 1E, MIL-Std., and industrial grades. It is ideal for displaying/controlling multiple variables such as: V, A, W & Hz or for triple redundant control. The UPM Series features 10 different mechanical models, from the flat pack to the explosion proof, and custom orders are welcome! As with all our products, the UPM comes with a Lifetime Warranty (limited) and has a CMTBF (Calulated Mean Time Between Failure) of 40 years!