# Access control NFC tag Grandstream GDS37XX G-AC1 MIFARE Classic 13.56 MHz

**URL:** https://aio.lv/en/product--grandstream-gds37xxfobg-ac1--11983943
**Data updated:** 2026-03-11 16:41 (EET)
**Category:** CCTV Accessories
**Manufacturer:** Grandstream
**Manufacturer code:** GDS37xx\_FOB\_G-AC1
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--grandstream-gds37xxfobg-ac1--11983943

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

NFC access control tag for Grandstream GDS37XX series, model G-AC1, using MIFARE Classic technology at 13.56 MHz. Designed as a compact credential for proximity authentication with compatible Grandstream door systems and readers. Suitable for employee badges, visitor passes, and secure entry applications where short-range NFC identification is required.

## Long description

Access control NFC tag Grandstream GDS37XX G-AC1 MIFARE Classic 13.56 MHz is a compact, passive contactless key fob designed for proximity authentication with Grandstream GDS37XX series door systems and compatible readers. Based on MIFARE Classic EV1 (S50) technology and operating at 13.56 MHz, this non-writable credential receives power from the reader’s radio field and communicates with the GDS3700 series to grant or deny access. The tag is supplied in a PVC/ABS laminated housing and is intended for routine use in access control, time attendance and security applications where short-range NFC identification is required.
Advantages
The G-AC1 fob offers reliable passive operation with no internal battery, a compact form factor for convenient carrying, and straightforward compatibility with Grandstream GDS3700-series readers. Its MIFARE Classic EV1 chipset provides standard contactless identification with 1 KB memory capacity and an operating distance exceeding 25 mm. The product is durable across a wide temperature range and rated for more than 100,000 read cycles, making it suitable for daily use in workplace and visitor management scenarios.
Suitable for
 Employee access badges for Grandstream GDS37XX door systems
 Visitor passes and temporary credentials
 Time and attendance identification
 Secure entry control in offices, shared facilities and residential buildings
Key specifications
 Card technology: MIFARE Classic EV1 (S50)
 Operating frequency: 13.56 MHz
 Memory capacity: 1 KB
 Operating distance: \> 25 mm (depends on reader and installation)
 Durability: \> 100,000 read cycles
 Materials and encapsulation: PVC laminated housing with ABS components
 Power supply: Passive (inductive, powered by reader field)
 Operating temperature: -30 °C to 60 °C
 Storage temperature: -30 °C to 80 °C
 Dimensions: 41 mm x 32 mm x 3.8 mm (+0.5 mm)
How to use
Present the G-AC1 fob to a compatible Grandstream GDS37XX series reader within the recommended operating distance; the reader supplies power and reads the non-writable credential. For initial setup, enroll the tag in the access control system according to the GDS37XX configuration procedures so that the reader associates the tag’s identifier with a user record or access profile. No battery or charging is required; the fob operates whenever it is within the reader’s field.
Usage recommendations
Store and handle the fob to avoid severe mechanical stress or exposure to corrosive chemicals. Maintain reader-to-tag alignment and keep the tag within the suggested read range for reliable operation. For security and lifecycle management, issue and revoke credentials through the Grandstream access control system and periodically verify access lists. Avoid attempting to rewrite the non-writable credential; use supported procedures for replacing or deactivating tags.

## FAQ

### How much does the Grandstream GDS37XX G-AC1 NFC tag MIFARE 13.56 MHz cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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 20.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Grandstream 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 Grandstream 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/11983943/67439531_large.webp