BLK-4-EWPFTs control module and strobe light come with Enhanced Weather Protection EWP, EWP products are designed to meet IP66 Ingress Protection Rating, see DOD# 859- Durable polycarbonate lens- High output long life LED technology- Four programmable flash patterns: – Single Flash – Double Flash – Quad Flash – Flicker Flash- 6 programmable beacon and strobe brightness settings- Immune to shock and vibration- Flush mount or surface mount with weatherproof single gang box included- 3/4In. knockouts for connecting conduit, etc.- Strobe and control module may be installed separately- Can be configured to signal: ringing, off-hook, a combination of both ringing and off-hook line in-use, or triggered from a contact closure- One set of NO normally open and NC normally closed relay contacts provided- Selectable ring cadence mode strobe light will remain flashing between rings- Switched 12V DC output follows relay activation for powering strobe lights, cameras, etc.- On/off switches for ring detection and off-hook/loop detection- Disable input, ideal for use with two-button emergency phones like VikingFTs E-1600-20A DOD# 215, will not activate strobe light on In.InfoIn. calls- Applications:- Ringing Phone or TTY indication for the hearing impaired- Ringing phone indication in loud warehouses and factories- Emergency illumination for emergency phones in elevators, campuses, hallways, parking ramps, etc.- Alarm indication for security systems or alarm panels with phone dialers