No harmful for human body,Support network RJ-45 cable Continuity Tester. The network drawing tools in our shop are safe.

Specifications
Test Correspond double twisted cables: 1,2,3,4,5,6,7,8 and G
Quickly and Easily checks network cables.
Battery: 9V( not included)
Tests Twisted-Pair Straight & Crossover Cables: RJ-45, RJ-11, RJ-12, CAT5, CAT 6, UTP
Automatic efficient scan for the miss wiring, disorder cable, open and short circuit

Following are abnormal connections:
A. If one cable, for example cable No. 3 is open circuit, two No.3 lights of the main tester and remote tester will not turn on
B. If several cables are not connected, the corresponding lights will not turn on. If less than two cables are connected, none of the lights is on
C. If two ends of cable are disordered, for example No.2 and No. 4, then display on:
Main Tester: 1-2-3-4-5-6-7-8-G
Remote Tester: 1-4-3-2-5-6-7-8-G
D. If two or more cables are short circuit, the corresponding lights won't be on of the remote tester while main tester remains normal
E. If test patch panels or wall plate outlets, two cables which can match each other (RJ45) will be connected to tester
Attention:This tester should not be used to test any electrified product, or it would be lead to PERMANENT: damaged

Set Includes
1 X Cable tester kit
1 X User Manual
Standard Packaging

• Compact Size
• Wiremap Type: RJ45 RJ11 RJ12 CAT5 CAT6 UTP
• Quickly and Easily checks network cables
• Support network: RJ-45 cable Continuity Tester

Compact SizeTekcoPlus Ltd