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PAR LED Grow Light
Product Introduction
| Not every grow space needs a broad wash of light across a wide canopy. Sometimes the requirement is the opposite: a concentrated, high-intensity beam directed at a specific plant, a single cola, a propagation mother, or a supplemental spot in a greenhouse where the overhead system does not reach. In these situations, a wide-angle panel or bar spreads its photons too thin. What works is a narrow-beam, high-output bulb that puts the light exactly where the plant needs it. The PAR LED Grow Light Bulb A is built for that role. It is a screw-in horticulture bulb with an E26/E27 base, available in three sizes-PAR20 (10/15W), PAR30 (25/30W), and PAR38 (30/40W)-each with a selectable beam angle of 15°, 24°, 36°, or 60°. The narrow-beam options concentrate output into a tight, high-PPFD footprint, while the wider options spread the beam for broader coverage. The PPFD at 0.3m ranges from ~800 µmol/s/m² on the smallest model to ~2400 µmol/s/m² on the largest-numbers that put this bulb in the high-intensity category for its size. The bulb uses COB or SMD LEDs from SANAN or Epistar, mounted in an aluminum + PC housing. The die-cast aluminum body provides passive thermal management and allows the higher-wattage models to run without active cooling. The IP44 rating provides splash resistance for humid grow areas and routine misting. The bulb is not dimmable and operates with flicker, so intensity is controlled by mounting height and beam angle selection rather than by a dimmer. |
Performance Comparison
| The screw-in grow bulb category includes a wide range of products, from low-output household replacements to high-intensity PAR-style bulbs. The comparison below reflects the practical differences a grower should consider when choosing between a focused PAR bulb and a broad-spread alternative. | |||
| Performance Metric | PAR Bulb A (PAR38, 40W) | Typical 30W "Full Spectrum" Bulb | Typical 15W Entry-Level Bulb |
| Form Factor | PAR38 (120 × 135 mm) | A19 or BR30 household shape | A19 household shape |
| Beam Angle | 15° / 24° / 36° / 60° (selectable) | 120° (wide) | 120° (wide) |
| PPFD @ 0.3m | ~2400 µmol/s/m² | ~100–180 µmol/s/m² | ~40–80 µmol/s/m² |
| PPE | ~1.8 µmol/J | ~1.2–1.8 µmol/J (often unverified) | ~0.8–1.2 µmol/J |
| Housing | Die-cast aluminum + PC | Plastic | Plastic |
| Thermal Management | Passive aluminum heatsink | Plastic body, limited heat spreading | Plastic body |
| IP Rating | IP44 | Usually unstated | Usually unstated |
| Socket | E26/E27 | E26/E27 | E26/E27 |
| Dimming | Not dimmable | Not dimmable | Not dimmable |
| Warranty | 3 Years | 1 year or none | 30–90 days |
| The key difference is beam control. A wide-angle bulb spreads its output across a large area at low intensity. A PAR-style bulb with a narrow beam concentrates the same output into a small footprint, producing much higher PPFD at the target. For a single plant or a targeted supplemental application, that concentration is the point. |
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Products Description
| Specification Sheet | |||
| Product Name | PAR LED Grow Light Bulb A | ||
| Model | EG-PR20BLGA-15 | EG-PR30BLGA-25 | EG-PR38BLGA-30 |
| Product Picture |    |
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| Product Size(mm) | 65*95mm | 95*127mm | 120*135mm |
| Wattage(W) | 10/15W | 25/30W | 30/40W |
| Spectrum |    |
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| Lamp Socket | E26/E27 | ||
| LED Light Source | COB or SMD | ||
| LED Brand | SANAN/ Epistar | ||
| Product Materials | Aluminum+PC | ||
| PPFD@0.3m(umols/s/m2) | ~800 | ~1600 | ~2400 |
| PPE(umol/J) | ~1.8 | ||
| Power Factor(PF) | >0.5/>0.9 | ||
| Flicker or Flicker Free | Flicker | ||
| Input voltage(V)/ Frequency(Hz) |
AC100~277V 50/60Hz; AC85~265V 50/60Hz | ||
| Dimming | Not Dimmable | ||
| View Angle | 15°, 24°, 36°, 60° | ||
| IP Rating | IP44 | ||
| Operating Temperature(℃) | -15~40 | ||
| Warranty | 3 years | ||
| Inner Box Size(mm) | |||
| Outer Carton | |||
| Feature | 1. Small light beam angle provide high light output and strong PPFD 2. Die-casting Aluminum give better heat disspation and higher wattage 3. Customization Spectrum for COB and SMD solution available |
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Application Scenarios
| Single-plant spotlighting. For a single high-light plant-a fruiting specimen, a mother plant, or a large ornamental-a narrow-beam PAR bulb delivers high PPFD to the canopy without wasting light on the surrounding area. Greenhouse supplemental lighting. In a greenhouse where the overhead system provides general coverage but does not reach a specific row or a lower canopy layer, a narrow-beam PAR bulb can be mounted to direct light down between rows or onto a specific target. Propagation and mother plant maintenance. A PAR30 or PAR38 with a 36° beam can deliver high-intensity light to a mother plant or a propagation area where compact, sturdy growth is required. Vertical farming and multi-tier racks. In a vertical rack, a narrow-beam bulb can be mounted above a specific tier to deliver high PPFD to that tier without spilling light onto adjacent tiers. The die-cast aluminum housing and passive cooling make the bulb suitable for continuous operation in a rack environment. Supplementary lighting for high-light crops. For crops that require high PPFD during flowering or fruiting, a PAR38 with a 15° or 24° beam can supplement the main lighting system in a targeted way. Educational and trial setups. The selectable beam angles and customizable spectrum make the bulb useful for small-scale comparative trials where a repeatable, directional light source is needed. |
Installation and Safety Notes
| Socket compatibility: Fits standard E26/E27 sockets. Confirm the socket is rated for the bulb wattage. Thermal management: The die-cast aluminum housing acts as a passive heatsink. Ensure adequate airflow around the bulb. Do not enclose it in a sealed, unventilated space. IP44 boundary: Splash-resistant, not immersible. Keep the socket and bulb base clear of standing water. Do not spray the bulb directly with a hose. Not dimmable: Output is fixed. Intensity is controlled by mounting height and beam angle selection. Photoperiod control: Use an external timer or timer-equipped outlet to manage light cycles. Beam angle selection: The beam angle is selected at the time of order and is not adjustable after purchase. Choose the beam angle based on the target footprint and mounting height. |
Frequently Asked Questions
| Q: What is the difference between the PAR20, PAR30, and PAR38 models? A: The models differ in physical size, wattage, and PPFD output. The PAR20 (10/15W) delivers ~800 µmol/s/m² at 0.3m, the PAR30 (25/30W) delivers ~1600 µmol/s/m², and the PAR38 (30/40W) delivers ~2400 µmol/s/m². The larger models are suitable for higher-light applications and larger single plants. Q: Can I change the beam angle after purchase? A: No. The beam angle is selected at the time of order. Choose the beam angle based on the target footprint and mounting height in your space. Q: Is the bulb dimmable? A: No. Output is fixed. Intensity is controlled by mounting height and beam angle selection. Q: Can I use the bulb in a humid propagation area with misting? A: Yes. The IP44 rating provides splash resistance. Keep the socket and bulb base clear of standing water and avoid direct hose spray on the bulb. Q: What is the difference between COB and SMD configurations? A: COB uses a dense cluster of LEDs on a single board, producing a compact, high-intensity source that works well with narrow beam angles. SMD uses individual LEDs mounted across the board, producing a more evenly distributed source. Both configurations are available with custom spectrum options. Q: Do you offer custom spectrum? A: Yes. Custom spectrum is available for both COB and SMD configurations (MOQ applies). Contact our technical team with your crop and target response requirements. Q: What is the warranty period? A: 3 years, covering defects in materials and workmanship. The warranty excludes damage from improper installation, overvoltage, water ingress, unauthorized modification, or operation outside rated environmental conditions. Q: Can I use this bulb as the sole light source for a plant? A: Yes, for a single plant or a small targeted area. The narrow-beam models are designed for spotlighting, not for broad canopy coverage. For larger canopies, multiple bulbs or a dedicated fixture is more appropriate. |
Request a Quote
| For product quotations, beam angle selection, COB or SMD configuration, or spectrum customization requests, send us an inquiry with your required model, quantity, and application details. Our team will respond with a proposal and configuration recommendation within 24 business hours. |
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