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12VDC
12VDC power supplies are one of the most common power supplies in use today. In general, a 12VDC output is obtained from 230-240VAC input using a combination of transformers, diodes and transistors.
There are three subsets of regulated power supplies: linear, switch-mode, and battery-based. Of the three basic regulated power supply designs, linear is the least complicated system, but switched and battery power have advantages.
$59.00 NZD | $249.00 NZD
$199.00 NZD | $895.00 NZD
$59.00 NZD | $629.00 NZD
$59.00 NZD | $444.00 NZD
$129.00 NZD | $735.00 NZD
GSM vs Bluetooth vs Keypad Gate Access: Which Method Should You Choose?
Essential Security Supplies
Comparing GSM/cellular, Bluetooth and keypad gate access for New Zealand properties. Learn which method suits homes, apartments and commercial gates, plus what NZ's 2G and 3G shutdowns mean for older GSM gate controllers.
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Pedestrian Access Control Design: Throughput, Accessibility and Anti-Tailgating
Essential Security Supplies
Designing pedestrian access control requires more than choosing a turnstile or speed gate. Learn how to balance lane throughput, accessibility, credential speed and anti-tailgating for commercial access control projects in New Zealand.
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Vehicle Detection for Gates: Inductive Loops vs Radar vs Safety Photocells
Essential Security Supplies
A practical guide to inductive loops, radar vehicle sensors, probes, and safety photocells for automatic gates and barriers.
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How to Size a UPS for CCTV, Access Control and Security Systems
Essential Security Supplies
A practical UPS sizing guide for CCTV, access control, intercoms and networking, covering watts, VA, runtime, topology, PoE loads and commissioning.
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