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Key Features & Specifications
Product type: TV coaxial socket outlet (1‑module width) designed to provide a wall‑mounted connector for TV antenna/coaxial cable.
Model number: 21157 (per listing) for the Roma Classic series.
Brand/series: Anchor Roma Classic series (modular wiring accessories).
Colour / finish: White (as listed).
Material: Polycarbonate housing — durable construction.
Application: Residential, commercial, and hospitality use according to the product listing.
Mounting: 1‑module size (fits single module frame in modular plate system) — i.e., compact and fits modular plate systems.
Purpose: To connect a TV/coaxial cable from antenna or cable TV feed inside the wall plate, providing a neat finish for wall TV outlet.

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What to Check / Consider
Ensure that the coaxial socket is of the correct impedance (most TV antenna/cable systems use 75 ohm coax). Confirm the socket supports the correct standard for your TV feed.
Check whether this socket is only for TV antenna/coax or also supports FM/DAB radio or satellite feed (some outlets have extra terminals). The listing doesn’t specify satellite feed, so check if you need multi‑way.
Since it’s 1 M width, make sure your face‑plate/cover frame has the correct spacing and module width for mounting this socket.
Finish & material: The polycarbonate material is good, but verify that the finish (white) matches your other switches/sockets if aesthetics matter.
Cable wiring: The internal wiring from the antenna feed to this socket needs to be of appropriate coax type (e.g., RG‑6 type, fresh termination) and maintain impedance continuity, otherwise signal quality may drop.
Installation environment: In humid areas (like Chennai) ensure good back‑box depth, proper earthing for the plate (if needed), and seal around wall so that moisture doesn’t degrade the faceplate or wiring.
Compatibility: If you have set‑top boxes, satellite TV, smart TV, etc., make sure the socket location and height suit your usage (front of TV, or behind TV mounting) and that there’s space for the coax connector.

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ℹ Summary
If you want a clean, modular wall‑mounted outlet for your TV’s antenna or cable feed, the Anchor Roma Classic 1‑module TV Coaxial Socket (Model 21157) is a solid choice — good brand, durable materials, modular design. Just ensure it matches your coax system (impedance and feed type), fits your faceplate frame, and the internal wiring is correct.