EF-Data SMS-451A SMS series protection switch Satellite / RF Ground Equipment

EF-Data SMS-451A SMS series protection switch Satellite / RF Ground Equipment Image 1

EF-Data SMS-451A 1:1 protection switch for satellite modem/modulator-demodulator pairs.

The EF-Data SMS-451A is a 1:1 protection switch from EF-Data’s SMS series, designed to protect a satellite modem or modulator/demodulator pair by automatically switching from a failed primary unit to a standby backup to maintain link continuity. It monitors alarm and status signals from the connected modems and performs a fast changeover on fault detection, with manual control available for planned maintenance or testing, and is built for rack mounting alongside the modem pair it protects. Protection switches of this type are standard equipment in any mission-critical teleport, VSAT hub or broadcast facility running SCPC or point-to-point satellite links, where redundancy on the baseband/modem side complements RF chain redundancy. EF-Data’s SMS series was a widely deployed line of protection switches across commercial and government satellite ground stations. Tech-Star (UK-based, shipped worldwide) stocks tested EF-Data SMS-451A switches. Contact us to confirm compatibility with your modem pair.

Worldwide supply. We export new and refurbished telecoms and networking equipment internationally. International buyers welcome, request a delivered quote in your currency. Supply subject to export checks.

From the same manufacturer

Compatible with the same platform

Frequently asked questions

Is the EF-Data SMS-451A refurbished or new?
Tech-Star supplies both new and refurbished EF-Data SMS-451A. Refurbished items are tested and graded against manufacturer specifications; the condition is confirmed at quote.
What warranty is included with the EF-Data SMS-451A?
Refurbished EF-Data SMS-451A comes with a 90-day parts and labour warranty as standard. Extended warranty options are available on request.
How do I get a price for the EF-Data SMS-451A?
Pricing reflects current stock and lead time, so we quote per enquiry. Submit the part number through the contact form for a quote, typically within one business hour.
Can the EF-Data SMS-451A be returned?
Returns are accepted within 14 days of delivery in line with our return policy. A restocking fee may apply for opened items.
How quickly can the EF-Data SMS-451A be delivered?
Lead time depends on current stock. UK-based items typically ship the next business day; sourced items vary. We confirm lead time at quote.

Key Features1:1 automatic protection switch; modem alarm/status monitoring; manual override for maintenance
ApplicationsMission-critical teleport modem redundancy; VSAT hub protection switching; SCPC link continuity
CompatibilityEF-Data and third-party satellite modems; rack-mount modem installations; SMS-series accessories
Specifications1:1 switchover configuration; automatic fault detection; rack-mount chassis
PlatformEF-Data SMS series protection switch
ManufacturerEF-Data

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