Dual-lite Atsd Auxiliary Transfer Switch, Utility & Generator

The auxiliary transfer switch works in conjunction with an emergency lighting inverter or auxiliary generator to power switched or dimmed emergency lighting fixtures. The auxiliary transfer switch senses the loss or normal power and, bypassing the switch or dimmer, transfers the lighting load to a designated emergency power source, regardless of the switch or dimmer position.
All Models
• Universal 120/277VAC operation
• Suitable for use with indoor-dry or damp location fixtures

ASTD
• UL 924 listed
• Maximum load rating: 3 amps
• Factory or field installation
• Compatible with all fluorescent fixtures
• Galvanized steel housing
• Easy installation inside of ballast channel
• Temperature range: 32°F - 122°F (0°C - 50°C)

ATSD20
• UL 1008 listed
• Maximum load rating: 20 amps
• Field installation
• Compatible with all lamp types
• Not recommended for use with switched HID lamps
• Surface wall mounting
• Temperature range: -4°F - 131°F (-20°C - 55°C)
Manufacturer Datasheet:
https://www.emergencylighting.com/ftpimages/pdfs/atsd.pdf