# Solar controller No name ST-401 NPWM white — ST-401 NPWM solar charge controller, white casing

**URL:** https://aio.lv/en/product--no-name-tsst401npwmwh--12218892
**Data updated:** 2026-03-27 13:59 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** No name
**Manufacturer code:** TSST401NPWMWH
**EAN:** 5902479662411
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 172.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 142.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-tsst401npwmwh--12218892

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

ST-401 NPWM by No name is a solar charge controller in a white enclosure designed to manage photovoltaic installations. Model ST-401 NPWM provides charge regulation and system protection functions typical for NPWM controllers. It is intended for connecting solar panels to battery systems to control charging, prevent overcharge and support reliable operation of small to medium off-grid or hybrid solar setups.

## Long description

ST-401 NPWM by No name is a solar charge controller in a white enclosure designed to manage photovoltaic installations. The ST-401 NPWM provides charge regulation and essential protection functions to connect solar panels to battery systems, prevent overcharge and ensure stable charging for small to medium off-grid or hybrid solar setups. The compact white casing and straightforward interface make it suitable for residential and light commercial applications where reliable battery charging and system protection are required.
Advantages
The controller integrates NPWM regulation technology to optimize charging efficiency and reduce energy losses during battery recharge. Built-in protection features guard against overcharge, reverse polarity and short circuits, contributing to longer battery life and safer operation. Its compact white enclosure allows flexible mounting in equipment cabinets or small enclosures while maintaining a low visual profile. The design supports easy wiring and basic monitoring without requiring complex configuration.
Suitable for
Small off-grid solar systems for cabins and remote lighting
Residential solar setups with battery storage
Hybrid systems that combine grid and solar inputs for backup power
Portable or temporary photovoltaic installations for events or field work
Key specifications
Controller type: NPWM solar charge controller for battery charging
Casing color and material: white enclosure designed for indoor mounting
Functions: charge regulation, overcharge protection, reverse polarity protection, short-circuit protection
Application: compatible with photovoltaic panels and lead‑acid or similar battery systems commonly used in off-grid installations
Installation: wall or panel mounting with standard electrical terminals for solar panel and battery connections
How to use
Install the ST-401 NPWM on a stable indoor surface away from direct moisture and excessive heat. Connect the battery first, observing correct polarity, then connect the photovoltaic panel array to the controller input. Ensure wiring is sized appropriately for the expected current and that fuses or circuit breakers are installed as required by local electrical regulations. After powering, check the controller indicators or basic display to confirm charging status and that no protection alarms are active. Routine visual inspections of connections and battery condition are recommended to maintain reliable operation.
Usage recommendations
Use the controller with batteries and solar panels that match the controller's voltage range and rated current. Protect wiring with correctly rated fuses or breakers, and place the device indoors or inside a weatherproof enclosure if used in exposed locations. Periodically inspect terminals for corrosion and confirm battery electrolyte levels where applicable. For systems with sensitive loads, consider adding appropriate load protection or surge suppression upstream.

## FAQ

### How much does the Solar controller No name ST-401 NPWM white cost, and is it available for purchase?

The price is 172.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 15.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Solar controller No name ST-401 NPWM white be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All No name products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized No name service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12218892/67972001_large.webp