Wheelock Inc. offers the versatility of the Series NS/HS4 Horn Strobes and NH Horn Appliances. These products feature low current, two selectable tones, continuous and temporal Code 3, and dB levels (90 or 95 dB), and Universal Mounting Plate. The NS/HS4 Horn Strobes are available with 15, 15/75, 30, 75 and 110 cd strobe intensities and 1575 cd. Synchronization can be achieved with the SM or DSM Sync Modules or Wheelock's PS-12/24 8-MP or CP Power Supplies with built-in sync protocol. The NS/NH are also patented 24V 2-wire appliances, while the HS4 is a 24V 4 wire model.