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Howler Site Alert RF Wireless Site Alarm


SKU: 60a8dcfd3ee1 Category: Brand:


Do you suffer from an aversion to wires? Are you hampered by budget constraints? The twin of the popular Site Alert is this neat radio-link buddy – he could be the answer to your problems.

The Site Alert RF comes with a host of important features and boasts an open air range of approximately 1km. Each system can have up to 30 subsidiary units connected to a Master unit. And, with 8 different channels, you have plenty of scope.

The whole family are famous for their silent chat. Uniquely, the system includes a silent automatic disconnection warning, meaning that should a unit become disconnected, the Master unit can immediately identify when one of his buddies is in trouble. This enables you to deal with the situation quickly and easily.

The distinctive weatherproof design is suitable for indoor and outdoor locations. They are solely powered by off-the shelf alkaline batteries, so ongoing maintenance is easy and economical.


The new Multipoint ASD detector range is available to order now with the following versions.

  • SA02M – Howler Site Alert RF Mater with Strobe
  • SA02S – Howler Site Alert RF Subsidiary with Strobe


  • Visual Warning – High intensity LED red flashing beacon fitted as standard. Ideal for noisy areas
  • Loud – 100dB at 1 metre
  • Weatherproof – Push on/push off switch operation
  • Battery powered – alkaline – cheap and easy to replace
  • Battery Test – Built-in low battery warning
  • Wireless Linking – Up to 30 units can be linked – no trailing wires
  • Flexibility – Open air range of approx. 1km and 8 channels – ideal for multiple building projects
  • No Control Panel Required – Simple installation and set up – very easy to use
  • Continuous Fault Monitoring – LED illuminates if any unit becomes disconnected


What is the range?

The open air range is approximately 1km. All Subsidiary units have to be within range of the Master unit. In practice, within a building we would suggest the following guidelines:

  • When located in stairwells up to 6 storeys can be covered
  • Each Subsidiary unit indoors should be within approximately 50m of the Master unit

Do I need special gear to programme this?

No, the units are addressed using DIP switches, making the system very simple to set up.

Can I have more than 1 Master unit on a site?

Yes, there are 8 channels, so up to 8 systems can be run separately in close proximity/

Do I need a control panel?

No, the system does not require a control panel. A Master Unit is required for each system.

How do I silence the alarms?

By pressing the switch on any unit 3 times in succession.

How do I know when the batteries need replacing?

There is automatic battery monitoring function on each unit, and a visual warning is given when the batteries need replacing.

What frequency is the system operating on?

The bandwidth is 868mHz and the units are equipped with Class 1 receivers providing reliable connections between units.

Additional information

Weight 1 kg

Subsidiary, Master