Dwyer APM-121 is a dual line configurable panel meter suitable for a wide range of industrial applications. It has an operating temperature range of -40 to 149°F (-40 to 65°C) and an accuracy of ±0.03% of calibrated span ±1 count. The meter can be powered by 85 to 265 VAC or 12 to 24 VDC, and it features a NEMA 4X, IP65 front enclosure rating. It offers a variety of electrical connections, including removable screw terminal blocks and an RJ45 for external relays, digital I/O, and serial communication adapters. The meter provides a 4 to 20 mA output signal and consumes 200 mA @ 24 VDC for 85 to 265 VAC models and 100 mA @ 24 VDC for 12 to 24 VDC models. The display is a dual-line 6-digit display with two different sizes (0.60 in and 0.46 in). The meter accepts input signals of 0 to 20 mA, 4 to 20 mA, 0 to 5V, or ±10V, with an input impedance of 50 to 100 Ω. It also features programmable time delays and has a maximum switch rating of 3A @ 30 VDC and 125/250 VAC for resistive loads. The meter comes with free programming software that is USB-based and resident on the meter, eliminating the need for downloads.