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Alarm

Compare alarm devices for intrusion, perimeter, emergency and environmental detection. The collection includes wired and wireless motion detectors, magnetic contacts, glass-break and shock sensors, emergency buttons, sounders, keypads, expanders and relay modules.

Start with the protected zones, detection task, building layout, response workflow and alarm panel. Then verify wired or wireless protocol, range, power, battery supervision, tamper detection, environmental limits, mounting, inputs, outputs and panel compatibility for every device. Smoke or life-safety applications require the appropriate local system design and approvals.

Alarm device selection

Match each detector and output to a defined alarm zone

Build the alarm system from protected zones and response actions. Select detectors, contacts, emergency buttons, sounders, keypads and modules only after confirming panel protocol, range and power.

Motion and PIR detectors

Match coverage pattern, distance, mounting height, environment and false-alarm controls.

Find motion detectors Door and window contacts

Select surface or recessed contacts from gap, material, wiring and mounting requirements.

Find magnetic contacts Glass-break and shock detectors

Review protected material, detection method, range, placement and site vibration.

Find break detectors Emergency buttons

Plan fixed or portable activation, user access, supervision and response handling.

Find emergency buttons Sounders and keypads

Coordinate notification, arming, user workflow, volume, power and panel support.

Find sounders and keypads Modules and expanders

Add inputs, outputs or relays only within the supported panel architecture and capacity.

Find alarm modules

199 Products

Alarm system planning

Design detection, supervision and response as one workflow

An alarm device is useful only when its zone, trigger, panel behavior and response are defined. Placement, protocol, supervision and maintenance determine reliability.

Five decisions for alarm devices

Map risks into alarm zones

List doors, windows, rooms, perimeters, valuables, emergency points and environmental risks. Give each detector a zone name, purpose, arming rule and expected response so alerts are understandable.

Choose wired or wireless architecture

Wired devices need cable, inputs and power but can suit fixed installations. Wireless devices need compatible protocol, range, battery supervision and interference planning. Do not assume devices from different systems pair together.

Follow the detector coverage pattern

Check distance, angle, mounting height, blind zones, glass type, door gap, vibration, pets, airflow and temperature. Test each detector in the completed environment rather than relying on a room-size estimate.

Verify panel inputs, outputs and behavior

Confirm zone type, resistance or bus protocol, wireless enrollment, expander capacity, siren output, relay actions, tamper, delays and event records for the exact alarm panel and firmware.

Plan supervision, testing and user response

Document batteries, communication checks, detector tests, cleaning, faults and ownership. Define who receives alerts, how they verify events and when an emergency service or site contact is called.

Alarm device selection checklist

Factor What to check Why it matters
Detection task Motion, opening, break, shock, smoke, emergency or output Selects the correct sensing or response device.
Coverage Range, angle, gap, surface, mounting height and environment Determines whether the protected area is actually covered.
Connection Wired input, bus or wireless protocol and range Controls panel compatibility and installation method.
Power Panel supply, battery, supervision, expected life and faults Supports dependable operation and maintenance.
Panel behavior Zone type, delay, tamper, siren, relay, event and notification Connects detection to the intended response.
Application Security, emergency, smoke or life-safety requirements Determines whether specialist design or approvals are required.

Alarm system questions

Should I choose wired or wireless alarm devices?

Choose from the building, cable access, panel protocol, range, battery maintenance and interference. Both require exact panel compatibility.

Where should a PIR motion detector be installed?

Follow the stated coverage pattern and height, avoiding heat sources, direct sun, moving curtains and other conditions that can affect detection.

How is a magnetic contact selected?

Check mounting surface, contact gap, surface or recessed installation, cable or wireless protocol and whether the opening material affects the magnet.

Will any wireless detector pair with any alarm panel?

No. Wireless protocol, frequency, region, firmware and enrollment support must match the exact panel.

Can a security smoke detector replace a required fire alarm?

Not automatically. Fire and life-safety systems can require specific design, listing, monitoring and approval under local rules.

What information is needed for an alarm device quote?

Provide the alarm panel, firmware, zone list, wired or wireless preference, distances, environment, response outputs, quantities and destination.

Life-safety, smoke, fire and emergency signaling may be regulated. Use qualified local professionals and equipment suitable for the required code, listing and application.