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MAIN FEATURES
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Testing RJ45 and RJ11 network cables
Cable length measurement using the TDR method
Locating wires and cables
Detecting open circuits and short circuits in wires
Detecting incorrect wire connections (Wiremap)
Detecting swapped wire pairs
Testing shielded and unshielded cables
Detecting voltage in the cable
Identifying the network port using the Port Flash function
Detecting correct crimping of the RJ45 connector
Detecting PoE power
UT683R receiver for locating and identifying wires
Receiver sensitivity adjustment
Cable length measurement calibration
Backlit LCD
Automatic shutdown after 10 minutes of inactivity

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TECHNICAL SPECIFICATIONS
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Display: LCD, 2.8 inches
Supported cable types: UTP, FTP, SSTP
Maximum cable length measurement range: 300 m
Cable length measurement resolution: 0.5 m
Cable length measurement accuracy: ±1 m (below 10 m), ±2 m (10–20 m), ±4% (20–100 m), ±5% (above 100 m)
Locating signal frequency: 125 kHz
Locating signal amplitude: 10 Vpp
Voltage detection: above 19 V
Input protection: 70 V DC
Tester power supply: 3 × 1.5 V AA batteries
UT683R receiver power supply: 3 × 1.5 V AAA batteries
Low battery indicator
Automatic shutdown: after 10 minutes of inactivity
Operating temperature: 0–40°C
Storage temperature: -20–60°C
Operating humidity: 20–75% RH (non-condensing)
Storage humidity: 10–90% RH (non-condensing)
Maximum operating altitude: 2000 m above sea level
Standards: CE, EN 61326-1:2013, EN 61326-2-2:2013
UT685A tester dimensions: 181 × 80 × 39 mm
UT683R receiver dimensions: 197 × 48 × 34 mm
Tester weight (without batteries): approx. 360 g
UT683R receiver weight (without batteries): approx. 127 g
Included: UT685A tester, UT683R receiver, AA batteries (3 pcs.), AAA batteries (3 pcs.), RJ45 adapter cable, RJ11 adapter cable, RJ11 adapter cable with alligator clips, Type-C cable, carrying bag, quick-start guide, safety instructions