After the rains, signboards across markets start flickering. The LEDs aren't failing — the power supply is. Vented, unsealed SMPS units let moisture in. The PCB starts tracking. The output goes unstable. Your sign is dim, dead, or strobing.
SP-727 is silicone-potted IP-67. Encapsulated. Sealed. Built to outlive the monsoon, the dust storms, and the 350V grid surges that take out cheap PSUs.
A 60-second walk-through of the actual problem — and how the SP-727 silicone-potted construction fixes it permanently.
Drives 5 metres of standard 12V LED strip (≈12W/m). CVCC keeps strips at exact-spec brightness with no over-current heating.
Cove · False Ceiling · Mood LightingGlow signs, ACP front-lit boards, 3D channel letters. IP-67 means no flicker after rain. Silicone-potted survives years on rooftops & facades.
Shops · Showrooms · Retail ChainsMost outdoor IP / dome / bullet cameras run on 12V. SP-727 powers up to 8–12 cameras simultaneously from one weatherproof PSU.
Surveillance · Society · OfficePathway, lawn, deck and step lights. Rated for direct rain & sprinkler exposure. No box, no hood — just install and forget.
Outdoor · Architectural · HospitalityBehind crown moulding, under cabinet edges, inside POP chases. Compact 155 × 44 × 36 mm fits between rafters and ceiling joints.
Hotel · Restaurant · ApartmentSplash-zone safe with IP-67 sealing. Powers backlit mirrors, vanity LED strips and shower-area accent lighting.
Bathroom · Salon · VanityDiwali façade lights, Christmas trees, wedding mandap décor. Handles temporary outdoor mounting without short-circuiting in dew.
Diwali · Wedding · EventSealed against cooking vapour, splashes and humidity. Drives long under-cabinet, plinth and toe-kick LED runs.
Modular Kitchen · Showroom DisplayConstant-current output protects sensitive aquarium LEDs. IP-67 case shrugs off splashes from filling, water changes and humidity.
Aquarium · Boat · PondScrolling LED boards, electronic queue tokens, retail price displays. Constant 12V keeps the display rock-steady at any input voltage.
Retail · Hospital · TransitRecessed step LEDs, staircase contour lighting, parking ramp markers. Sealed against cleaning-water splash and dust.
Society · Hotel · OfficeStationary-only AC-to-DC supply. Powers interior LED strips, reading lights and small loads when plugged into shore power.
RV · Camper · Tour BusCheap signboard PSUs are vented for cooling — that vent is also where water, dust and insects get in. After one monsoon, the PCB is corroded and the output is unstable.
SP-727's enclosure is filled to the brim with thermally-conductive silicone. The PCB is locked in place. Water has nowhere to go. Heat conducts straight through the silicone into the case and dissipates through the mounting flange.
Bonus: Silicone potting also damps mechanical vibration — useful when the PSU is mounted to a billboard frame that sways in wind.
Indian voltage isn't a steady 230V. Suburbs see it bounce between 180V and 290V hourly. During grid switching, lightning, or a transformer arcing nearby, you get spikes well past 300V — and they don't always trip the meter.
SP-727 takes a beating. Operating range 130 – 290V AC. Sustained over-voltage protection at 350V AC for 4 hours straight. 2.5 kV surge immunity per IEC 61000-4-5 (lightning impulse standard).
Most cheap signboard SMPS units fail at the first 280V spike. SP-727 is rated to survive what the grid actually does, not what the spec says it should.
Whole PCB locked in flexible thermal silicone. Water has nowhere to enter, vibration cannot crack joints.
IEC 61000-4-5 lightning standard. Survives the spikes that take out cheap drivers in seconds.
Constant Voltage + Constant Current. Strips never see over-current. Shorts are limited, not catastrophic.
Survives sustained Indian over-voltage events. Operating range 130–290V keeps it running through brownouts too.
Runs cool. Less wasted power, lower case temperature, longer component life. Heatsinks through the silicone.
BIS-registered (R-81003824 · IS 15885 Part 2/Sec 13). Designed & built at our Site-IV plant. 17 years of LED driver expertise.
Free shipping above ₹999 · 2-year warranty · COD available