4 Watt | 10 Hours Backup | IP64 Rating | Day & Night Sensor | Radar Sensor – Solar Street Light

Overview

The 4W Solar Street Light (Star Model 1248) is a compact, all-in-one off-grid lighting solution designed specifically for narrow residential colony footpaths, housing society internal pedestrian lanes, garden perimeter walls, farmhouse boundary paths, and low-traffic rural village alleys across India. Featuring 192 LED 2835 EPISTAR chips producing a combined 40W output in cool white and a 3.2V 5Ah LiFePO4 battery rated for 10 hours of illumination, this entry-level solar street light is built around two intelligent sensing systems — a Day & Night Sensor for automatic dusk-to-dawn switching and a Radar Sensor for motion-based brightness control — delivering reliable, fully automatic operation with IP64 weatherproofing and no grid connection or external wiring required.

LED Performance & Light Output

The Star Model 1248 houses 192 LED 2835 EPISTAR chips at a combined 40W output in cool white. The 2835 EPISTAR chip is a compact, high-efficacy SMD LED widely used in low-to-mid power outdoor lighting for its reliable lumen output and long operational lifespan. EPISTAR is a Taiwanese LED manufacturer whose chip series is a recognised quality benchmark in the Indian solar street light market, appearing as a search qualifier online for buyers comparing LED component quality. At 192 chips across a single-window Star Model array, the 1248 produces uniform, low-glare cool white illumination well suited to 3-metre mounting on narrow pedestrian paths, garden boundary walls, and colony access gates. The cool white output is appropriate for safety lighting on footpaths and residential garden perimeters.

Battery – LiFePO4 5Ah Capacity & 10-Hour Backup

The 3.2V 5Ah LiFePO4 battery in the Star Model 1248 provides the energy storage required to power the 40W LED array through 10 hours of dusk-to-dawn operation under ideal solar charging conditions. LiFePO4 (Lithium Iron Phosphate) chemistry is a significant specification advantage over the lead-acid or low-grade Li-ion batteries found in many budget solar garden lights available at similar price points online. Lead-acid batteries in this form factor degrade rapidly under repeated deep discharge, losing usable capacity within 12–18 months under daily dusk-to-dawn cycling. LiFePO4 maintains over 80% capacity after 2,000 charge-discharge cycles, equating to more than five years of daily operation. The chemistry is also thermally stable, making it suitable for unattended operation in high-ambient-temperature conditions across Rajasthan, Gujarat, and Andhra Pradesh where battery thermal stress is a leading cause of premature solar light failure.

Body Build & Weatherproofing

The Star Model 1248 carries an IP64 weatherproofing certification, confirming complete dust protection and resistance to water jets from any direction. IP64 is the appropriate outdoor lighting standard for year-round deployment across India’s monsoon-affected climate zones, from the heavy-rainfall coastal regions of Kerala and the Western Ghats to the dust-laden semi-arid environments of Rajasthan and western Uttar Pradesh. The unit measures 34.5 × 23 × 20 cm — the most compact form factor in the Star Model series — making it suitable for 3-metre residential poles without visual imbalance. Pole diameter compatibility is 50mm, covering the standard residential and colony-grade GI poles commonly specified in Indian housing society and panchayat lighting projects. The sealed housing construction resists moisture infiltration, dust accumulation on internal electronics, and insect ingress — all common failure causes in lower-cost, non-IP-rated solar garden lights.

Smart Controls & Sensor Operation

The Star Model 1248 operates fully automatically through two integrated sensing systems — a Day & Night Sensor and a Radar Sensor — with no manual switching required. The Day & Night Sensor activates the light automatically at dusk and switches it off at dawn, ensuring reliable dusk-to-dawn coverage across all seasons without user intervention. The Radar Sensor manages a three-state brightness sequence: 10% standby brightness during inactive periods, 100% full brightness on motion detection, and 15% brightness for 30 seconds post-motion before returning to standby. This sensor-managed dimming is the key enabler of the 10-hour backup rating — reducing average nightly power consumption to approximately 10–15W on low-traffic colony footpaths and garden boundary perimeters where sustained full brightness is rarely required throughout the night.

Solar Panel & Charging Efficiency

The 5V 9W monocrystalline solar panel in the Star Model 1248 charges the 5Ah LiFePO4 battery within 6–8 hours of direct sunlight. Monocrystalline silicon cells achieve conversion efficiencies of 19–22% under standard test conditions, outperforming polycrystalline alternatives in both full-sun and diffused light conditions — particularly relevant during India’s monsoon season and the shorter, lower-angle sun days of north Indian winters (November–January). The 9W panel wattage is correctly sized for the 5Ah battery’s daily charge requirement, ensuring reliable 10-hour backup across most Indian solar zones. The factory-integrated panel eliminates on-site tilt calibration, ensuring consistent performance across residential installations managed by housing society maintenance staff without specialist solar knowledge.

Installation & Mounting

The Star Model 1248 is designed for installation without electrical wiring, trenching, or grid connection. The complete pre-assembled unit — with Day & Night Sensor and Radar Sensor factory-integrated — mounts to a 50mm diameter pole at 3 metres height using the included bracket. At 3 metres, the unit is appropriate for narrow pedestrian footpaths, garden walls, gated community internal lanes, and residential boundary lighting. Installation can typically be completed in under 20 minutes per unit, making the 1248 practical for DIY installation by housing society maintenance staff or small electrical contractors without specialist solar experience. Supplied at 10 units per carton, the 1248 is procurement-ready for housing society common area lighting projects.

Technical Specifications