Features: This digital display ac ammeter is suitable for measuring single-phase ac current parameters of power distribution system Instrument programmable, support RTU communication protocol. Can be widely used in various control systems, power distribution automation, industrial automation, intelligent building and other occasions. Ultra-thin design, and Liquid crystal display Easy to install, no bracket installation and high protection level for durability Specification: Working environment conditions Working temperature -10°C ~ 55°C Storage temperature -25°C ~ 70°C Relative humidity ≤95%RH,No condensation altitude ≤2500m Anti-fouling level Non-corrosive gas Protection grade Display surface frame IP54, instrument case IP20 insulation Signal, power supply, the output terminal for shell > 100 m Ω resistance withstand voltage input and power supply≥2kV, input and output≥2kV, power and output≥2kV Display Display mode LCD Working power supply Nominal range AC/DC（80~270）V Power consumption ≤5VA withstand voltage ≥2kV Current input range 5A/1A resolution 1mA impedance ≤20mΩ/phase Power consumption ≤0.2 VA/phase Over current Duration:1.2In,instantaneous:10In/5s frequency 45 Hz-65 Hz Communication interface Physical interface RS-485 communication rate MAX.9.6 kbps Communication protocol RTU isolation voltage 2000 VAC (1 min) Size 7.2*7.2*5.2cm/2.8*2.8*2in Weight Approx.155g/5.5oz Package list: 1 x Digital Single-phase Ammeter 1 x manual 1、This digital display ac ammeter is suitable for measuring single-phase ac current parameters of power distribution system 2、Instrument programmable, support RTU communication protocol. 3、Can be widely used in various control systems, power distribution automation, industrial automation, intelligent building and other occasions. 4、Ultra-thin design, and Liquid crystal display 5、Easy to install, no bracket installation and high protection level for durability