Voltage indicator, optical light cable
Image shown with label. Label sold separately. Warning: Verify an electrical conductor has been de-energized using an adequately rated voltage detector before working on it. Follow appropriate Energy Control (Lockout/Tagout) procedures as per OSHA Subpart S; the current edition of NFPA 70E; and the current edition of CSA Z462.
http://www.graceport.com/safeside/r-3f2-l36