About the product1. Built-in microcomputer chip for energy metering, along with current sensor and LCD display 2. Can be used to measure air conditioners, refrigerators, microwave and other household appliances 3. Suitable for families, rental housing, office, laboratory and etcFeatures1. Standard: BC17215-2003 2. Power applied: 220V 50Hz Max 16A (Less than 3520W) 3. Precision: 1.0 4. Constant: 6400imp/kWh 5. Power consumed: less than 1W 6. Operating temperature: 0 - 45 celsius degree 7. Storage temperature: -20 - 60 celsius degree 8. Monitor present active power/voltage/current/frequency 9. Record powering time and power consumed 10. Calculate CO2 emission 11. Backlight and Large LCD displaySpecification: General Model GM89 Size 11.8*5.9*6.1cm Weight 129g Package Weight One Package Weight 0.19kgs / 0.42lb One Package Size 20.4cm * 13.3cm * 6.5cm / 8.03inch * 5.24inch * 2.56inch Qty per Carton 20 Carton Weight 4.30kgs / 9.48lb Carton Size 55cm * 35cm * 23cm / 21.65inch * 13.78inch * 9.06inch Loading Container 20GP: 602 cartons * 20 pcs = 12040 pcs 40HQ: 1398 cartons * 20 pcs = 27960 pcs