RS-5000R Multifunctional Submersible Water Pump – 2500L/H Aquarium & Pond Pump (60W) 
🔥Description🔥
The RS Electrical RS-399 Stainless Steel Heater (200W) is a robust, precision thermostat heater designed for medium- to large-sized aquariums. Housed in corrosion-resistant stainless steel, the RS-399 delivers reliable heating performance and long-term durability. Its adjustable temperature range (12°C–34°C / 53°F–93°F) covers cold-water to tropical setups, while the automatic on/off thermostat and indicator light give true “set-and-forget” convenience.
Designed for continuous submersion and heavy-duty use, the RS-399 fits neatly into tanks with its slim 31 × 2.5 × 2.5 cm form factor and mounts securely with included suction cups. The stainless-steel construction reduces breakage risk compared with glass heaters and is a good choice when protective housings or external exposure are possible. For best results, mount near circulation (filter outflow) and verify temperature with an independent aquarium thermometer. Item photos are self-taken; product color and small details may vary due to lighting or screen differences.
📌Specifications📌
- Product Name: RS Electrical RS-399 Stainless Steel Aquarium Heater.
- Brand: RS Electrical.
- Origin: China.
- Model: RS-399 (200W).
- Power: 200W.
- Voltage / Frequency: 220–240V ~50–60Hz.
- Temperature Range: Adjustable 12°C – 34°C (53°F – 94°F).
- Recommended Aquarium Capacity: 200 – 250 L.
- Material: Stainless steel heating sleeve, plastic end caps, glass/plastic control cover, rubber seals.
- Dimensions (L × H × W): 31 × 2.5 × 2.5 cm.
- Item Weight: 330 g (with box).
- Mounting Accessories: 2 × suction cups included.
- Operation: Fully submersible, thermostatic auto on/off with indicator light.
- Protection Rating: Designed for submersion.
- Safety Notes: Use a GFCI outlet, avoid running dry, and inspect seals before use.
- Included Images: Self-taken (original).
- Disclaimer: Color & intensity may vary slightly depending on monitor and photography lighting.
🍁Key Features🍁
✅ Power: 200W — robust heating for medium/large tanks.
✅ Adjustable Thermostat: 12°C – 34°C (53°F – 93°F) — wide range for diverse setups.
✅ Stainless Steel Body: corrosion-resistant, durable, and safer than plain glass in many scenarios.
✅ Fully Submersible: designed for continuous underwater use.
✅ Auto On/Off with Indicator Light: automatic thermostat cycling with visual status.
✅ Slim 31cm Size: easy placement and unobtrusive design.
✅ Secure Mounting: includes 2 suction cups for glass attachment.
✅ Recommended Aquarium: 200–250 L.
🛡️Usage Instructions🛡️
🚀 Inspect: Unbox and check the heater, seals, cable, and suction cups for damage before use.
🚀 Mount: Attach suction cups to the heater and press firmly onto clean aquarium glass.
🚀 Set Temperature: Adjust the thermostat knob to your target temperature (12–34°C).
🚀 Submerge: Fully submerge the heater before connecting power. Ensure the unit is underwater at all times during operation.
🚀 Power: Plug into a grounded 220–240V outlet using GFCI or surge protection.
🚀 Verify: Use a separate aquarium thermometer to confirm the set temperature stabilizes after a few hours.
🚀 Maintenance: Periodically disconnect power, remove and clean the heater gently to remove algae; inspect rubber seals. Replace if damage is visible.
🚀 Storage: If removing for long-term storage, dry and store in a safe place.
📒Note:📒
🔸 Do not operate the heater dry. Always ensure full submersion before switching on to avoid damage.
🔸 Use GFCI-protected outlets for safety and keep plug/cable dry.
🎈What’s in the Box🎈
💥 1 × RS Electrical (RS-399) Stainless Steel Aquarium Heater (200W).
💥 2 × Suction cups for glass mounting
.
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