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Activating and using Siren Times

Jarrison Time can interface with devices that are compatible with sirens connected directly to them. The siren behaviour and schedule can be configured in Jarrison Time and then be sent to the relevant devices.

This article will cover the activation of the Siren Time feature in Jarrison Time, and setting up a schedule for the siren. Please note the article assumes correct hardware installation and connection.

Activating Siren Use

1) Navigate to Setup > System Configuration > Hardware tab


2) Tick the Use Siren Times checkbox under General.

3) Click Save and Close the window.

Setting Siren Schedules

1) Navigate to Access > Siren Times

2) In the window that opens, a list of the existing siren schedules with their configurations are displayed. When first configuring Siren Times the Default schedule will exist, but won’t be configured with any times.
To add a new schedule, click on the Add button below the schedule list on the far left and enter an appropriate name at the top.

Click the Add button towards the middle of the screen to begin adding schedules.


In the below example, some times have been configured for the Default schedule. One row for Monday to Thursday at 12:00, to trigger for 5 seconds. Another row for Friday at 10:00, to trigger for 5 seconds.


Below a new schedule has been added with further times.


After clicking Save a notification message will appear to advise that the schedule changes will only take effect at midnight. To force it into immediate effect the JT Engine needs to be restarted.

Applying Siren Times to Devices

Siren schedules need to be applied to each device individually. To apply the new schedule use the following steps:

1) Navigate to Access > Devices


2) From the list on the left side, select a device to apply the schedule to. Then tick the Activate Siren Schedule checkbox.


3) From the dropdown list select a schedule to apply.

4) Click Save.

The device will now be able to trigger the siren according to the linked schedule. Note that the JT Engine must be running and the device online.

Related Activating and using Siren Times Articles

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Glossary of Terms

.Net Framework

(known as “dot net”) .Net is a software development framework for building and running applications on Windows.

Access Control

Access control refers to the restriction of people’s ability to clock on biometric devices based on location and/or time. Advanced access control includes anti-passback and zone sequencing.

Access Groups

Access Groups in Jarrison Time are combinations of Devices and Time Zones, used to determine on which devices and at which times members of the Access Groups may clock. Access Groups also facilitate restrictions based on too much or too little clocking in specified time-frames.

Access Groups can by synchronized or imported by Third-Party Import, or by users.

Access Zone

In Jarrison Time an Access Zone is how devices are grouped together to form logical zones for the purposes of access control. The option is available with the JT Live module.

Adjustments (Manual Adjustments)

Adjustments are the method of covering absence of time by employees in Jarrison Time. Examples of adjustments would be Annual leave and Sick leave. Adjustments are typically applied by a user via Daily Details as needed, or can be imported from file. It’s very important that Adjustments are correctly configured and applied as paid or unpaid. (Unpaid will result in Short Time.)

Anti Passback

Anti Passback is a form of access control where people are restricted from clocking on the device most recently clocked on, until they have clocked at another device.

Approval Bypass

Approval Bypass is a feature of Jarrison Time Approvals that allows for the first approval tier to be approved without any exceptions being cleared.


Approvals are a system-wide setting that forces users to correct Exceptions and then lock periods from further editing, ready for submission to payroll.

Jarrison Time allows for up to three tiers of Approvals: Daily Summary (timesheet), Pay totals, Department totals. Starting at timesheet level, each tier needs to be approved before the next one can process.


An Area in Jarrison Time refers to a GPS location with a set radius, which designates a permitted T&A clocking area for JT Clock users.

Area Schedule

The Area Schedule is used in conjunction with JT Clock to determine where JT Clock users should clock on a given day.


Authentication in the context of access control or T&A is the means by which a person identifies themselves to biometric devices for clocking purposes.


In Jarrison Time it is possible to allow employees to earn unapproved overtime when working additional hours. The unapproved time must then be authorized (to change to payable OT) or declined by a user. Authorization categories are setup so the system knows where to send approved or declined time.

Biometric Device (Reader)

A biometric device is a type of device (also known as a reader), usually wall-mounted but can be handheld, used to authenticate a person’s identity by recognizing some part of their body. Jarrison Time is directly compatible with a wide range of biometric devices covering the following means of authentication: Fingerprint, Face, Palm. Tags and PINs can also be accepted if the device supports it.

Bouncing (Shift Sensing)

Bouncing is a system-based method of assigning Day Programs to employees based on their clocking times. The selection of Day Programs the system can apply and when to apply them needs to be configured.