Features:_x000D_ _x000D_ Electrical parameter measurement function (voltage, current, active power, energy, frequency, power factor) _x000D_ Overload alarm function (over power alarm threshold, backlight and power flashing to alarm). _x000D_ Power alarm threshold preset function (can set power alarm threshold). _x000D_ The energy can be reset use the key. _x000D_ Store data when power off. _x000D_ Large-screen LCD _x000D_ Backlight function. _x000D_ Appearance and Key function _x000D_ _x000D_ _x000D_ Specification:_x000D_ _x000D_ Brand: PEACEFAIR _x000D_ Model: PZEM-018 _x000D_ Working voltage: 80 ~ 260VAC_x000D_ Test voltage: 80 ~ 260VAC _x000D_ Current: 5A_x000D_ Rated power: 5A/1100W_x000D_ Operating frequency: 45-65Hz_x000D_ Measurement accuracy: 1.0 grade_x000D_ Size: 9*5*2.5cm/3.5*2*1in_x000D_ Weight: Approx.85g/3oz _x000D_ _x000D_ _x000D_ Package list:_x000D_ 1 * Digital Meter _x000D_ _x000D_ _x000D_ _x000D_ Display Interface _x000D_ Display interface is large-screen LCD, it can display six parameters at the same time. _x000D_ II.Display format _x000D_ 1. Power: test range: 0~1100W, Starting measure power: 0.2W _x000D_ 10W display format:1.00~9.99W _x000D_ 100W display format:10.0~99.9W _x000D_ 1000W display format:100~999W _x000D_ 1000W display format:1.00~1.10kW _x000D_ 2. Energy: test range: 0~999kWh _x000D_ 1kWh display format:0~999Wh _x000D_ 10kWh display format:1.00~9.99kWh _x000D_ 10kWh display format: 10~999kWh _x000D_ 3. Voltage: test range: 80~260V _x000D_ Display format: 80~260V _x000D_ 4. Current: test range: 0~5A,Starting measure current: 0.001A _x000D_ Display format: 0.000~5.000A _x000D_ 5. Frequency: test range: 45~65Hz _x000D_ Display format: 45~65Hz _x000D_ 6. Power factor: test range: 0~1PF _x000D_ Display format: 0.00~1.00PF _x000D_ _x000D_ _x000D_ Key function_x000D_ _x000D_ 1. Backlight control _x000D_ Short press the key to turn on or off the backlight, the backlight has memory function, it can store the on or off state when power off. _x000D_ 2. Reset energy _x000D_ Step1: Long press the key for 5 seconds until the energy value flash, then release the key. _x000D_ Step2: Short press the key again, then the energy value is cleared and exit the reset flashing state. _x000D_ Step3:If there is no operation on the key within 5 seconds, it means the energy value is not cleared and will exit the reset state. _x000D_ 3. Set power alarm threshold _x000D_ Step1: Long press the key until the LCD screen display:SET CLr", then release the key to enter the setting state _x000D_ Step2: Power window display the current power alarm value and the last digit begin to flash, then you can short press to plus 1, when there is no operating over 3 seconds, it will switch the digit position automatically, the setting method is as same as the above. _x000D_ Step3: After finish the setting, long press the key over 5 seconds will store automatically and exit, the range of active power threshold is 0.0~2.5kW. _x000D_ _x000D_ _x000D_ Note: _x000D_ 1. This module is suitable for indoor, please do not use outdoor. _x000D_ 2. Applied load should not exceed the rated power. _x000D_ 3. Wiring order can't be wrong.