The WFPA-W meets UL1638 and UL1971 requirements. The Standard for Safety Signaling Devices for Hearing Impaired. With an extended temperature range of —31^ºF to 150^ºF (-35^ºC to 66^ºC). Wheelock weatherproof appliances meet or exceed UL outdoor test requirements for rain, humidity, and corrosion resistance. Providing multiple strobe intensity options, including the highest strobe ratings available for area coverage per NFPA 72 strobe spacing tables.

All models may synchronized using the Wheelock DSM Sync Modules, and Wheelock Power Supplies. Or other manufacturer’s panels incorporating the Wheelock Patented Sync Protocol. The horn output of horn strobes can b e independently controlled on 2-wire circuits using the Wheelock patented sync protocol.