TF-GSM-B21 GSM Modem LED Display Panel Controller

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SKU: TF-GSM-B21
387 Units in Stock
Brand: TF
Category:Asynchronous Control Cards

$85.00

Description
Shipping information
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The TF-GSM-B21 is a broad-range wireless SMS LED display panel controller card designed for single-color and dual-color sign boards in indoor and outdoor applications. Combining GSM cellular modem connectivity, support for high-resolution bitmap fonts up to 64x64, multi-port interface outputs, and phone number binding filters, it enables remote text message updates across wide-format displays without requiring local network wiring.

Features & Specifications

Application	Indoor and outdoor environments
Pixel Capacity	• Single Color: Up to 1600 x 32 or 1024 x 64 pixels • Dual Color: Up to 1024 x 32 or 512 x 64 pixels
Control Functions	Asynchronous SMS control card supporting GSM wireless content updates, four-zone independent layout display, custom dynamic border effects, dial/text clocks, and programmable buzzer alerts on message reception.
Cellular & Security	GSM modem communication. Supports phone number binding and whitelist filtering to prevent unauthorized or spam message updates.
Font & Message Storage	Built-in 16x16, 32x32, 48x48, and 64x64 bitmap font libraries. Storage for up to 400 messages (up to 180 Chinese characters per message; 20,000 characters total capacity).
Ports & Interfaces	Two HUB08 ports, four HUB12 ports
Scanning Modes	Supports 1/16, 1/8, and 1/4 scan modes for monochrome and dual-color LED modules.
Brightness Adjustment	16-level brightness control supporting manual adjustment and scheduled time-based dimming.
Border & Display Effects	Supports independent dynamic color frame effects and visual display modes such as rain, fountain, and scrolling.
Hardware Features	Onboard test button for diagnostics and color testing modes; programmable onboard alert buzzer.
Operating Temperature	-20°C to 50°C

1. Shipping Cost

The unit price of each item listed at our online shop does not include the shipping cost. It will be provided in your checkout.

2. Shipping Method & Delivery Time

We ship items worldwide using fast express services with tracking numbers via DHL, FedEx, or UPS. The estimated delivery time is approximately 4 – 8+ business days.

3. Buyer's Shipping Account

We can ship using the buyer’s own courier account. However, the buyer must arrange the pickup and provide us with the printable shipping label. Simply providing an account number is not sufficient. If you use a FedEx account, please also provide a control number or reference number.

4. Order Processing Time

Orders are processed within 1 – 3 working days after payment is received. If any item is out of stock, we will inform you of the revised delivery time.

5. Shipping Address Accuracy

We only ship to the confirmed address provided in your order. Please ensure your delivery address is correct when paying via PayPal or credit card. If the address does not match, we reserve the right to cancel the order and issue a refund. Payments via bank transfer (T/T) or Western Union are exempt from this restriction.

6. Transit Time

Shipping transit time is provided by the carrier and excludes weekends and public holidays. Delivery times may vary, especially during peak or holiday seasons.

7. Customs Duties & Taxes

The buyer is responsible for any customs duties, taxes, or import charges. If you require a declared value adjustment on the shipping invoice, please inform us in advance. Otherwise, we will declare the actual paid amount.

(For small shipments to the continental United States, our prices include import duties, and buyers from there will not be required to pay any additional import-related fees. Import duties and related charges for bulk shipments are subject to final confirmation.)

Please note that in most EU countries, declaring a lower value is not permitted, and the actual transaction value must be used. For EU countries, Switzerland, Norway, and Ireland, an EORI number or VAT number is required for customs clearance.

8. Customs Clearance Assistance

If required, the buyer must provide reasonable assistance to the shipping carrier for customs clearance in their country.

9. Inspection Upon Delivery

Please inspect the goods in front of the DHL/FedEx/UPS courier upon delivery. If any damage is found, request official damage documentation (Proof of Damage) from the carrier and immediately notify us by email with photos of the packaging and products.

10. Warranty Policy

The LED display parts listed at our online shop are covered by a 12-month quality warranty. For some hardly obtained legacy parts, we may provide used items that are covered by a 6-month warranty. The condition is indicated as "used" for those items on their product page.

If products fail under normal use within the warranty period, we will repair or replace them free of charge at our side. Damage caused by improper installation, power surges/electrical overload, water ingress, or unauthorized modification is excluded.

The buyer is responsible for all shipping costs and any applicable import duties or taxes for both returning the items to us and receiving the repaired or replacement items.

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