Adjustable Step Up/Down Voltage/Current Power Supply Module

DC adjustable constant voltage and constant current step up/down power supply module with 3A output, protections and solar charging support.

✓Adjustable voltage and current
✓Step up and step down
✓Constant current LED driving
✓Built-in protection features
✓Supports solar charging

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○Out of StockSKU: AS-6017C8NF

💻 Product Overview

The ZK-SJ4 is a DC adjustable constant voltage and constant current step up/down power supply module. It lets you set a stable output voltage and current for tasks such as buck power conversion, charging and driving LEDs at constant current. It is aimed at electronics builders and repair work where a compact, adjustable supply is needed, and it supports solar charging.

✨ Key Features

Adjustable output: Output voltage and current can be set to match the load.
Step up and step down: Works as a buck or boost supply in one module.
Constant current mode: Can drive LEDs at a set current.
Charging use: Can serve as a charger for suitable loads.
Protection set: Includes undervoltage self-recovery, anti-backflow and short protection.
Solar support: Designed to work with solar charging setups.

🇱🇧 Why Buy from Technodel?

🚚 Delivery Across Lebanon — 1-3 business days to all regions
🛡️ Warranty — as stated on this product page, plus 30-day returns with a full refund
💬 WhatsApp Support — ask us anything before or after you order
💵 Cash on Delivery — pay when the order reaches you

🛒 Frequently Bought Together

🎯

Bundle Deal

Buy all 3 + save 5%

❓ Common Questions

Real questions customers ask about this product — delivery, warranty, payments & compatibility.

Is this product available in Lebanon?▾

Yes — it is available at Technodel with delivery across all of Lebanon: same-day to Beirut, Sour, Tripoli and surroundings, and 1–2 days to every other region.

Where does Technodel source this product?▾

Technodel sources from established suppliers in Lebanon. The product page states its condition and its warranty, and compatible parts are labelled as compatible.

What warranty comes with this product?▾

Warranty terms are stated on each product page. Where a manufacturer warranty applies, warranty support is handled through Technodel.

How can I pay for this product?▾

Technodel accepts cash on delivery, Wish Money transfer, and cryptocurrency (USDT, BTC, ETH). Delivery is a flat $4 anywhere in Lebanon, free on orders of $500 or more.

Is this power supply enough for my PC build?▾

Add your CPU + GPU power draw plus ~30% headroom. A quality 650–750W 80+ Gold unit covers most single-GPU builds; high-end GPUs (RTX 4080/4090) typically want 850W+. Modular units ease cable management.

What's the difference between modular and non-modular PSUs?▾

Fully modular PSUs attach only the cables you need — tidier builds. Semi-modular fixes essential cables but frees the rest. Non-modular is cheaper but all cables are fixed.

Need another answer? Message us on WhatsApp +961 3 659 872 or read our FAQ.