What is the Sigma Elec ADA-21S?
The Sigma Elec ADA-21S is an optical amplifier, listed by the manufacturer as "AUDIO DISTRIBUTION AMPLIFIER CARD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
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Part Overview
ADA-21S overview
optical amplifierThe ADA-21S is an optical amplifier manufactured by Sigma Elec. Listed by the manufacturer as "AUDIO DISTRIBUTION AMPLIFIER CARD", it is available through Circular Telecom's surplus and refurbished network equipment marketplace as a sustainable, tested alternative to buying new.
Common Questions
Common questions about ADA-21S
Is the Sigma Elec ADA-21S available refurbished or as surplus stock?
Circular Telecom sources and resells surplus and refurbished Sigma Elec network equipment, including parts such as the ADA-21S, subject to current availability. Contact Circular Telecom for a live quote.
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