Timers, Controllers & Sensors Price Guide - Local Stock & Expert Support

Find the right timers, controllers and sensors - without delays

When cost, availability and compatibility matter, you need a supplier that keeps popular timers, PLC controllers, and sensors in stock locally. Communica offers a wide range of products and accessories so South African makers, students, technicians and procurement teams can compare prices, check stock and collect from our Samrand or branch locations quickly. Use this page to understand price drivers, compare specs, and find locally stocked brands and parts.

Why price varies and what to watch for

Price depends on form factor (DIN rail timer vs PCB module), accuracy, sensing method (inductive, optical, ultrasonic), communication features (Modbus, I2C, wireless) and included accessories (mounting, housings, cables). Lead times and import availability also affect final cost - Communica's local footprint helps reduce wait times for many popular items.

Quick comparison table: typical price bands

Use this table as a starting guide; exact prices and stock are shown on product pages.

Specification callouts to check before buying

• Supply voltage and power rating - ensure compatibility with your supply.
• Output type - relay, transistor, open-collector, or analog signal.
• Response time / accuracy - critical for timing and sensing tasks.
• Mounting and enclosure - DIN rail, panel mount or PCB-mounted options.
• Communication interfaces - for networked or smart systems.

For a broad browse of parts and categories, explore our collections at Shop by Category. To review brands we stock, visit Shop by Brand. If you’re new to Communica and want background on our service and branches, see About Us.

Example: sizing a timing circuit (simple calculation)

For many hobby timers using a 555-style circuit, the timing interval is approximated by:

T = 1.1 * R * C

Where T is seconds, R is resistance in ohms and C is capacitance in farads. Use these calculations to pick components with suitable voltage and tolerance ratings. For higher-voltage or industrial timing applications, choose purpose-built DIN timers with rated supply and contact power.

Compatibility, accessories and real-world value

When comparing timers, controllers and sensors price, include the cost of connectors, mounting hardware, cable glands, and any required signal conditioning. Communica stocks related accessories across our tools and enclosures collection - see Collections and the full product index at All Products to compare bundles.

Wiring diagram example (relay output timer)

Simple wiring for a 12V relay-output timer:

+12V ----+-----------+ Vcc
         |           |
        [Timer]----(Relay Common)
         |           |
GND -----+-----------+ GND

Confirm relay contact ratings and use a flyback diode or snubber across inductive loads. For sensors, match output type (e.g., NPN/PNP or analog 0-10V/4-20mA) to your controller or PLC inputs to avoid interface adapters.

Objection handling: lead times, VAT invoices and branch pickup

Concerned about delays? Communica maintains a Samrand head office/warehouse and branches in Pretoria and Cape Town to minimise lead times and enable branch collection. Check branch stock and trading hours on our Branches & Trading Hours page. We provide VAT invoices for procurement and education purchases - useful for tertiary projects and departmental procurement.

Specification callout and bundles to consider

• Starter bundle: dev board + sensor module + cables - ideal for students.
• Panel control kit: DIN timer + enclosure + terminal block set for installations.
• Industrial bundle: rugged proximity sensor + mounting bracket + connector.

Compare specifications using our product pages to ensure compatibility. If you need a quote for bulk or project procurement, request one through our site or contact your local branch - our team can consolidate line items and supply VAT-compliant documentation quickly.

Summary - price, stock and support you can rely on

Whether you’re a student building a prototype or an engineer specifying parts for production, focus on the right spec first, then compare prices including accessories and lead times. Communica’s wide stock of timers, controllers and sensors, local branches, and clear product categories make it easier to find what you need in South Africa. For hands-on browsing, start at our homepage and use the product collections to narrow choices. Shop Now, Check Stock in Samrand, Compare Specs, or Request a Quote to move your project forward with confidence.