Features:
Display Count: 2000
Auto Power Off  Around 10 Minutes: √
Low Battery Indication: √
Data Hold: √
Data Logging: 20
LCD Backlight：√
Full Icon Display：√
Double Insulation Protection: √
Contact Badness Display: Port C or Port E don`t contact Display"----Ω"
Over-Range Display: Display “OL"
Simple 2-Wires Testing: √
Precision 3-Wires Testing: √

Specifications:
Model: UT521
Earth Resistance (Ω): 20Ω ±(2%+10) ; 200Ω ±(2%+3) ; 2000Ω ±(2%+3)
AC Earth Voltage (V): 0～200V ±(1%+4)
Frequency：50Hz/60Hz

General Characteristic:
Power: 6 * 1.5V AA Alkaline Batteries (not included)
Product Net Weight: 560g
Product Size: 160mm * 70.5mm * 100mm
LCD Size: 65mm * 30mm
Product Color: Red and Grey
Package Size: 25 * 16 * 14cm / 10 * 6.5 * 5in
Package Weight: 1967g / 4.3lb

Package List:
1 * UNI-T UT-521 Digital Earth Tester
3 * Three Test Lead (Green + Yellow + Red)
2 * Alligator Test Leads (Green + Red)
2 * Auxiliary Earth Stakes
1 * English Manual