The SLT99 solar street light throws light from three sides of the fixture instead of one, which is what makes this all-in-one unit interesting for roads, compounds, and courtyards that need wide coverage from a single pole. This guide walks through what the 3-sided design actually buys you, the full 240W and 360W specifications, and how to pick the right tier for your site.

In this guide:

• What a 3-sided solar street light is
• MD-SLT99 specifications at a glance
• Reading the specs: battery, panel, and runtime
• 240W or 360W: which tier fits your site?
• Where the wide-angle design pays off
• Installation notes
• Ordering checklist
• Featured model specifications
• FAQ

What a 3-sided solar street light is

A conventional all-in-one solar street light sends its beam forward and down — one face of light. A 3-sided design like the MD-SLT99 wraps LEDs around the front and both sides of the housing, so one fixture covers a wider arc of ground: the road ahead, plus the shoulders, paths, or compound edges on either side of the pole.
That extra coverage matters most where roads are wider than a single beam can wash — T-junctions, compound entrances, wide rural roads, and open courtyards. Instead of adding a second pole and fixture to cover the sides, one wide-angle unit can do the job, which cuts pole, battery, and installation costs roughly in half for those layouts.

MD-SLT99 specifications at a glance

The MD-SLT99 line covers 200W, 240W, and 360W tiers. Here are the two main tiers, taken directly from the product specification sheet:

Reading the specs: battery, panel, and runtime

Three rows of that table deserve a closer look, because they decide how the unit behaves in the field:

• Battery capacity (3.2V 16AH / 24AH). This is the fuel tank. The 360W tier carries 50% more amp-hours than the 240W tier, which is how it sustains a bigger LED array for the same 12-hour working time. A 3.2V system is the low-voltage architecture typical of integrated solar lights — safe to handle and simple to service.
• Solar panel (4.5V 15W / 20W). The panel refills the tank each day. Match panel size to your sunlight: sites with strong, consistent sun recharge comfortably; sites with long overcast stretches should lean toward the larger tier or discuss autonomy with the supplier before ordering volume.
• Working time (12 hours). Specified for both tiers, 12 hours covers dusk-to-dawn in most tropical latitudes year-round. That is the number to compare against your site’s dark hours, not the wattage on the model name.

One more spec that matters: SMD 3535 LEDs (220 / 328 pcs depending on tier). This package is the workhorse of commercial solar lighting — efficient, thermally stable, and rated for long service life. More LED points also spread light more evenly across the three emitting faces.

240W or 360W: which tier fits your site?

• 240W (1500LM, 560mm body): village and estate roads, walkways, school compounds, small parking areas. A single fixture covers a standard road width with side spill to spare.
• 360W (2200LM, 690mm body): wider roads, T-junctions, entrances where two paths meet, and sites with ambient light competing (shopfronts, generator areas). The longer housing carries more LEDs and the bigger battery to feed them.

A practical sizing habit: if the area you need to light is wider than about two vehicle lanes, or the pole stands at a junction, step up to the 360W tier — the wide-angle design spreads lumens over a bigger arc, and the larger tier keeps the intensity up across that arc.

Where the wide-angle design pays off

• Rural and estate roads: one pole, one fixture, road and shoulders covered.
• Compound and perimeter lighting: side-facing LEDs wash walls and fence lines that a forward-only fixture would miss.
• Junctions and gate areas: coverage where two paths cross, without a second install.
• Courtyards and markets: broad, even light for open public spaces.

Installation notes

The MD-SLT99 is all-in-one: panel, battery, LED, and controller in one housing that clamps to a pole. No trenching, no control cabinet, no electrician. Three mounting points to get right:

• Pole height. Match height to tier and coverage — the higher the mount, the wider the spread but the lower the ground intensity. Confirm the intended mounting height with your supplier for the tier you choose.
• Face the sun. The housing’s panel side should face the sun path with a clear sky view — shading from trees or buildings cuts the whole day’s charging.
• Secure the clamp. A rigid mount keeps the three-sided beam aimed where you planned it; wind creep on a loose clamp quietly rotates your light pattern over months.

Ordering checklist

• [ ] Coverage area and mounting height confirmed for 240W vs 360W?
• [ ] Dark hours at your latitude covered by the 12-hour working time?
• [ ] Sunlight at the mounting point unshaded through the day?
• [ ] Pole diameter and clamp compatibility checked?
• [ ] IP65 suitable for your rain and dust exposure (coastal sites: confirm extra protection)?
• [ ] Warranty and spare battery availability confirmed?

Featured model: MD-SLT99 3-sided wide-angle solar street light

• Type: All-in-one solar street light, 3-sided wide-angle light emission, IP65 waterproof
• Range: 200W / 240W / 360W tiers
• Solar panel: 4.5V 15W (240W tier) / 4.5V 20W (360W tier)
• Battery: 3.2V 16AH / 3.2V 24AH
• LED: SMD 3535, 220 / 328 pcs
• Lumen: 1500LM / 2200LM
• Working time: 12 hours
• Size: 560×236×56.5mm / 690×236×56.5mm

Full specifications and variants on the product page: MD-SLT99 3-Sided Solar Street Light.

FAQ

What is a 3-sided solar street light?
A 3-sided solar street light emits light from the front and both sides of the fixture, covering a wider arc of ground from a single pole than a conventional forward-only unit. The MD-SLT99 uses this layout for roads, junctions, and compounds that need wide coverage.

How long does the MD-SLT99 stay on each night?
Both the 240W and 360W tiers are specified for 12 hours of working time, which covers dusk-to-dawn operation in most tropical latitudes.

What is the difference between the 240W and 360W models?
The 360W tier carries a larger LED count (328 vs 220 pcs), more battery capacity (3.2V 24AH vs 16AH), a bigger panel, higher output (2200LM vs 1500LM), and a longer housing (690mm vs 560mm) — built for wider roads and junctions.

Does the MD-SLT99 need wiring or a control cabinet?
No. It is an all-in-one unit: the panel, battery, LED, and controller are integrated in one housing that mounts on a pole. Installation is clamping the fixture and letting the sun charge it.

Can the MD-SLT99 work through several cloudy days?
The specification sheet states 12 hours of working time per charge. Autonomy across consecutive overcast days depends on the site’s sunlight and the reserve in the battery — for monsoon or long overcast regions, discuss autonomy settings with the supplier before ordering volume.