Monitored Electric Locks: Bolt, Door and Bond Status NZ
Essential Security Supplies
A controller output marked locked does not necessarily mean the physical door is secure. It may simply confirm that the controller has energised or de-energised a relay. For commercial access control, monitored electric locking hardware can provide additional feedback about the door leaf, an engaged bolt or strike, or the bond between a magnetic lock and its armature. Those signals help installers diagnose faults and create better...
Read more
Door Loops and Power Transfer Devices: Safe Door Wiring NZ
Essential Security Supplies
An access-controlled door is a moving mechanical assembly, not simply a fixed electrical load. Power and monitoring cables often have to pass between a stationary frame and a moving leaf. The wrong transfer method can pinch conductors, fatigue strands, damage a rated door or interrupt the supply to an electric lock. For New Zealand installers, selecting a door loop or concealed power transfer is therefore a mechanical,...
Read more
Mechanical PIN Code Locks NZ: Commercial Door Guide
Essential Security Supplies
A practical NZ installer guide to mechanical PIN code locks, including door compatibility, Lockwood and Schlage options, commissioning, security limitations and specification advice.
Read more
Alarm EOL Resistors: Single, Double and Triple End-of-Line Wiring Explained
Essential Security Supplies
End-of-line resistors allow an alarm panel to interpret defined circuit resistance states. Single, double and triple EOL arrangements can provide different supervision, but their values and wiring are panel-specific. NZ installers should use the chosen panel and detector manuals rather than copying a resistor diagram from another installation.
Read more