35 Watt | 12 Hours Backup | IP66 Rating | Day & Night Sensor | Radar Sensor | Battery Level Indicator – Solar Street Light

Overview

The 35W Solar Street Light (Space Model 1351) is a high-output, all-in-one off-grid lighting fixture designed for medium-width roads, large parking areas, highway service lanes, industrial campuses, and housing society main roads across India. Incorporating 72 LED 5054 chips at 400W LED power and a 3.2V 30Ah LiFePO4 battery, the 1351 delivers bright, sustained cool white illumination for 12 hours per charge cycle. Built with IP66 weatherproofing — the highest protection rating in its segment — the Space Model 1351 combines a Day & Night Sensor for automatic dusk-to-dawn switching, a Radar Sensor for intelligent motion-based brightness management, and a Battery Level Indicator for at-a-glance charge status monitoring. With an installation height of 5–7 metres and a 12-lens Space Model optic array for wide beam distribution, the 1351 is the correct specification for applications requiring greater mounting clearance and broader road coverage than lower-wattage units — with no external wiring or grid connection required.

LED Performance & Light Output

The 35W Space Model 1351 integrates 72 LED 5054 chips rated at 400W LED power output in cool white, making it appropriate for medium-to-high traffic zones including colony main roads, commercial parking lots, farmhouse access drives, and rural highway service roads. The 12-lens optical array in the Space Model 1351 provides a broader illumination spread compared to the 9-lens 25W variant, reducing the number of poles required per unit of road length and lowering overall project cost. LED 5054 chips are specified for their superior thermal management properties, essential for consistent lumen output across the high-temperature operating conditions prevalent in Indian summers where ambient temperatures frequently exceed 40°C. The Day & Night Sensor ensures the full 400W LED output is active automatically from dusk to dawn, and the Radar Sensor intelligently manages brightness levels to deliver the 12-hour backup across a full dusk-to-dawn cycle.

Battery – LiFePO4 30Ah Capacity & 12-Hour Backup

The 3.2V 30Ah LiFePO4 battery in the Space Model 1351 provides 25% greater storage capacity than the 24Ah unit in the 25W model, supporting the higher power draw of the 72-LED, 400W array across the full 12-hour backup window. LiFePO4 chemistry is markedly superior to lead-acid batteries commonly found in lower-priced solar street lights in India — lead-acid cells degrade rapidly under the deep discharge cycles inherent in dusk-to-dawn solar lighting, particularly during monsoon or winter months with reduced solar input. LiFePO4 batteries maintain over 80% capacity after 2,000 cycles, equivalent to over five years of daily operation without battery replacement. The chemistry also poses no thermal runaway risk, an important safety consideration for unattended outdoor installations across India’s high-ambient-temperature climate zones. The integrated Battery Level Indicator allows users and facility managers to check the 30Ah battery’s charge status at a glance — without dismounting the unit — enabling proactive maintenance scheduling across multi-light road and parking area installations.

Body Build & Weatherproofing – IP66

The Space Model 1351 carries an IP66 weatherproofing rating — the highest protection standard in its wattage segment — confirming complete dust ingress protection and resistance to high-pressure water jets from any direction. IP66 exceeds the standard IP64 and IP65 ratings of most competing solar street lights, making the 1351 suitable for permanent outdoor installation across India’s most demanding climate environments, from heavy monsoon rainfall on the western and eastern coasts to high-dust semi-arid conditions in Rajasthan and Punjab, and salt-air coastal exposure in Maharashtra and Kerala. The compact body measures 28 × 3 × 85 cm — slightly longer than the 25W model to accommodate the increased 30Ah battery, 72-chip LED array, and Battery Level Indicator — while maintaining an aerodynamic housing profile that minimises wind-induced vibration at the 5–7 metre installation height. Pole diameter compatibility of 40–50mm ensures the 35W unit can be deployed on the same pole stock as the 25W model for mixed installations.

Smart Controls – Day & Night Sensor | Radar Sensor | Battery Level Indicator

The Space Model 1351 operates fully automatically through two integrated sensing systems — a Day & Night Sensor and a Radar Sensor — supported by a Battery Level Indicator and a wireless remote control for additional operational flexibility. The Day & Night Sensor activates the unit automatically at dusk and switches it off at dawn across all seasons, ensuring consistent year-round dusk-to-dawn coverage on medium-width colony main roads, large parking areas, and industrial estate access lanes where manual daily switching is not operationally feasible. The Radar Sensor manages a three-state brightness sequence: 10% standby brightness during inactive periods, 100% full brightness on radar motion detection, and 20% brightness for 30 seconds post-motion before returning to standby — the key enabler of the 12-hour backup by conserving battery energy during low-traffic overnight periods. The Battery Level Indicator provides visible charge status monitoring, allowing facility managers and housing society maintenance staff to assess battery health across all installed units without physical access to each pole. The included wireless remote control provides additional flexibility with OFF/ON, AUTO, RADAR, and timed induction modes at 2H, 3H, and 4H — the RADAR mode being particularly effective for high-security applications such as warehouse perimeter roads, industrial estate access gates, and rural petrol stations where full brightness on demand is essential without sustaining 100% output all night.

Solar Panel & Charging Efficiency

The 5V 30W monocrystalline solar panel in the Space Model 1351 delivers 30% greater peak wattage than the 23W panel in the 25W model, providing the additional charging capacity required to replenish the larger 30Ah LiFePO4 battery within 5–7 hours of direct sunlight. Monocrystalline panels achieve conversion efficiencies of 19–22% under standard test conditions, maintaining a higher conversion rate than polycrystalline alternatives under both optimal and sub-optimal irradiance conditions — a meaningful advantage during India’s June–September monsoon season when solar intensity is reduced across coastal, north-eastern, and central regions, and during the shorter, lower-angle solar days of north Indian winters (November–January). The factory-integrated panel orientation eliminates site-level tilt adjustments and ensures repeatable charging performance across bulk installations managed by housing society maintenance teams and gram panchayat contractors without specialist solar knowledge.

Installation & Mounting

Installation of the Space Model 1351 follows the same no-wiring, off-grid process as the 25W model. The fully pre-assembled unit — solar panel, 30Ah LiFePO4 battery, LED module, Day & Night Sensor, Radar Sensor, Battery Level Indicator, and controller — mounts to a 40–50mm diameter pole at 5–7 metres height using the included bracket, with no electrical connections to external infrastructure required. The 5–7 metre installation height, combined with the 12-lens optical array, positions the 400W output at the optimal height for uniform road surface illumination across medium-to-wide colony main roads, large parking areas, and industrial estate perimeter tracks. The identical 40–50mm pole specification across both the 25W and 35W Space Models simplifies supply chain management for projects deploying both wattages across different zones of the same site. At 5 units per carton, logistics for medium and large procurement volumes are straightforward for housing developers, gram panchayat bodies, municipality contractors, and industrial estate managers.

Technical Specifications