Platinum series digital panel meters feature 24-bit analog-to-digital converters that can measure 20 samples per second. The nine-segment LED display has a wide viewing angle and displays full-scale positive and negative readings in red, green, or amber. The meters produce accurate readings for nine types of thermocouples, as well as readings for resistance temperature detectors (RTDs), thermistors, and analog DC voltages and currents. They are compatible with firmware and support USB communications. Optional Ethernet, RS232/RS485 with Modbus serial communications, and alarm relays are also available. It accepts power supplies between 90 and 120 V ac.