Standalones For Commercial/Institutional Security Solutions

All access control systems, regardless of their size, are built and installed one door at a time. Each door needs to be designed, installed and operate like it’s the only door in the system.

It is increasingly rare to encounter a security system which is not connected by some means with a larger group of doors, be it networked or wireless. And even if there is no network connection to a door, there still may be an ‘offline’ relationship, where although management and reporting are not in real time, there is a provision for the management of card holders, uploading activity logs and alteration of system operating parameters to meet requirements.

Hybrid system designs may include certain features, but omit others. This may be due to technological limitations of a particular product, or because the device is designed to fit a particular market segment or price point.

Being able to adapt the system to closely achieve the customer’s stated requirements means you are providing custom design services that differentiate you from the rest of the pack. You are offering a scalable solution which you may be able to upgrade in the future as the client’s security requirements and skills evolve, and you are doing your job as a professional security provider.


Case Study: Healthcare

This month’s case history is a good example of value-driven system design because the solution was custom configured to the customer’s exacting, and almost perpetually revised security requirements, and it was provided to the customer in a timely and cost-effective manner.

The project involved the inner lobby door to a health care facility. During the day, a receptionist was stationed in the vestibule adjacent to the door. While her presence there represented a degree of security for the premises and the patients, there might be times when she would have to leave her station. After hours, no one was there to admit visitors and monitor for inappropriate departures.

It was determined that a delayed egress system would provide the required degree of protection against patients straying out of the door by providing staff an audible alert and permitting time for a response. The Local Authority Having Jurisdiction (LAHJ) concurred with the application.

However, this was a high traffic door with visitors and staff passing through in both directions all day long. The entry function during business hours would be covered by the receptionist. Also the receptionist could see as individuals approached the door from within the premises. But an additional means for authorized individuals to leave without involving the receptionist when she was busy or after hours was required.

I specified an Essex SKE 34S standalone keypad and a Securitron IMXDA delayed egress electromagnetic lock.


Essex Standalone Keypads

Model SKE 34S is a standalone keypad with a sealed stainless keypad housing. There are no moving parts and it is extremely durable and easy to clean. It also has several great features which enabled me to design a highly functional door control system with it and the IMXDa which also offers many features in addition to the delayed egress function.

The SKE-34 is a heavy duty self contained access control keypad with many features that make it suitable for a variety of applications and environments including residential, institutional and harsh environments. The unit has an integral Form C 2A main output relay, as well as two open collector outputs* which can operate exterior relays and be controlled in a variety of ways. It may be configured to operate at 5 VDC or 12/24VDC.

The keyboard is laser etched stainless steel piezo actuated with no moving parts, and weather/vandal resistant.

The keypad is available in a 3X4 single gang or 2X6 narrow mullion configuration.

*What is an open collector output?: In functional terms, an open collector output means that when the output is activated, it goes to ground and is able to pull enough current to operate a small load or a relay coil.


Securitron IMXDa

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