# Buffered switching power supply PULSAR AWZ-637 for access controllers — backup battery input, regulated DC output

**URL:** https://aio.lv/en/product--pulsar-awz-637--11988249
**Data updated:** 2026-03-11 18:21 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** PULSAR
**Manufacturer code:** AWZ-637
**EAN:** 5902135316443
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 178.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 147.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--pulsar-awz-637--11988249

## 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

PULSAR AWZ-637 is a buffered switching power supply designed for access control systems and controllers. It provides regulated DC output and includes a dedicated input for backup battery connection to ensure uninterrupted operation during mains failure. Suitable for powering access panels, readers and controllers in security and entry management installations.

## Long description

PULSAR AWZ-637 is a buffered switching power supply designed for access control systems and controllers. It delivers a regulated DC output and features a dedicated backup battery input to maintain continuous operation during mains interruptions. The unit is intended for powering access panels, card readers and control modules in security and entry management installations where stable voltage and battery backup are required.
Advantages
The power supply uses switching technology to provide stable, regulated DC output with efficient energy conversion and reduced heat dissipation. Its buffered design includes a dedicated battery input that enables automatic switching to backup power when the mains supply fails. Compact construction and standardized output characteristics simplify installation and integration with a wide range of access controllers and readers. Built-in protection mechanisms support reliable operation under variable load conditions.
Suitable for
Powering standalone and networked access control panels
Supplying card readers, keypads and proximity sensors
Providing backup power for door controllers during mains outages
Use in security cabinets, server rooms and control enclosures
Key specifications
Buffered switching topology with regulated DC output suitable for access control equipment
Dedicated battery input for external backup battery connection to ensure uninterrupted operation
Suitable output voltage and current ratings for typical access controllers and readers (refer to product manual for exact values)
Protection features against overload and short-circuit conditions to preserve connected devices
Compact form factor for installation inside security or electrical enclosures
How to use
Install the PULSAR AWZ-637 inside an appropriate enclosure following local electrical codes. Connect the mains supply to the designated input and attach the regulated DC output to the access controller or reader according to polarity. Connect an external sealed lead-acid backup battery to the dedicated battery input, observing correct voltage and polarity. Verify connections and power up the unit; the device will charge the connected battery and switch automatically to battery power if mains supply is interrupted. Consult the supplied manual for wiring diagrams, fusing recommendations and detailed electrical parameters.
Usage recommendations
Use sealed lead-acid batteries of the voltage specified in the manual and ensure regular battery maintenance and periodic testing. Place the power supply in a ventilated, dry location away from heat sources and corrosive environments. Follow manufacturer guidance for wire gauge, fuse selection and maximum combined load of connected devices to maintain reliable operation.

## FAQ

### How much does the PULSAR AWZ-637 buffered switching power supply cost, and is it available for purchase?

The price is 178.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 PULSAR AWZ-637 buffered switching power supply 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 PULSAR 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 PULSAR 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/11988249/67443700_large.webp