Features Electrical parameter measurement function (voltage, current, active power, energy, frequency, power factor) Overload alarm function (over power alarm threshold, backlight and power flashing to alarm). Power alarm threshold preset function (can set power alarm threshold). The energy can be reset use the key.Backlight function. Store data when power off.Appearance and Key function.Large-screen LCD Specification: Brand: PEACEFAIR Model: PZEM-018 Working voltage: 80 ~ 260VAC Test voltage: 80 ~ 260VAC Current: 5A Rated power: 5A/1100W Operating frequency: 45-65Hz Measurement accuracy: 1.0 grade Size: 9*5*2.5cm/3.5*2*1in Weight: Approx.85g/3oz Package list: 1 * Digital Meter Display Interface Display interface is large-screen LCD, it can display six parameters at the same time. II.Display format 1. Power: test range: 0~1100W, Starting measure power: 0.2W ＜10W    display format:1.00~9.99W ＜100W   display format:10.0~99.9W ＜1000W  display format:100~999W    ≥1000W  display format:1.00~1.10kW 2. Energy: test range: 0~999kWh ＜1kWh   display format:0~999Wh ＜10kWh  display format:1.00~9.99kWh ≥10kWh  display format: 10~999kWh 3. Voltage: test range: 80~260V Display format: 80~260V 4. Current: test range: 0~5A,Starting measure current: 0.001A Display format: 0.000~5.000A 5. Frequency: test range: 45~65Hz     Display format: 45~65Hz 6. Power factor: test range: 0~1PF     Display format: 0.00~1.00PF Package List