---
title: "Secondbase Brochure"
id: 70101
type: "document"
slug: "secondbase-brochure"
url: "http://localhost/document/secondbase-brochure/"
markdown_url: "http://localhost/document/secondbase-brochure.md"
published_at: "2026-07-12T20:49:59+00:00"
modified_at: "2026-07-12T20:49:59+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Product brochure for Secondbase's stick-on push-button keyboard overlay for the TS1000/ZX81, designed to solve the flat membrane keyboard's lack of tactile feedback. Made of silicone rubber with a claimed 3.5-million-keystroke lifespan, heat/cold/moisture resistance, and no soldering or disassembly required for installation — it simply adheres over the existing flat keyboard. Priced at $15.00, with a…"
category:
  - name: "Documentation"
    slug: "documentation"
    taxonomy: "category"
    url: "http://localhost/category/documentation/"
post_tag:
  - name: "Secondbase"
    slug: "secondbase"
    taxonomy: "post_tag"
    url: "http://localhost/tag/secondbase/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
document_url: "https://archive.org/details/secondbase-brochure"
pages: 2
document_date: "1984"
related_content:
  - id: 13879
    title: "Secondbase keyboard"
    type: "product"
    url: "http://localhost/product/secondbase-keyboard/"
document_publisher:
  - id: 11270
    title: "Secondbase"
    type: "company"
    url: "http://localhost/company/secondbase/"
---

# Secondbase Brochure

Product brochure for Secondbase’s stick-on push-button keyboard overlay for the TS1000/ZX81, designed to solve the flat membrane keyboard’s lack of tactile feedback. Made of silicone rubber with a claimed 3.5-million-keystroke lifespan, heat/cold/moisture resistance, and no soldering or disassembly required for installation — it simply adheres over the existing flat keyboard. Priced at $15.00, with a bundled game-playing overlay and stick-on directional/command labels; additional overlay packs available separately at $1.50.