• Continuous and consistent operation from 60 to 1000 Volts DC

• Internal self-test

• Lead Monitoring circuit to sound alarm in case of lost connection

• Mueller 21A — 50 amp clips

• Uses 8 D-cell batteries; one-touch internal battery tester checks battery power

• Setup hook for easy attachment to 3rd rail protection board

• 2 sirens – each greater than 100 dB @ 1 yard

• Red and White LED strobes

• Approved and compliant with NYC Transit