Security Alarm Accessories
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SaleVendor:Ness SecurityReplacement Alarm Battery 12V 7AH For Ness Security Hills Reliance Bosch Security Alarm
Regular price $41.95Sale price $41.95 Regular priceUnit price per$69.00 -
SaleVendor:Ness SecurityNess Bridge Ethernet Interface – Connect Your Alarm to Internet & App Control
Only 4 leftRegular price $164.00Sale price $164.00 Regular priceUnit price per$255.00 -
SaleVendor:Reliance XRHills Reliance Alarm Battery 12V 5Ah | R4 R8 NX4 NX8 Replacement
Only 11 leftRegular price $39.95Sale price $39.95 Regular priceUnit price per$69.00 -
SaleVendor:Ness Security2x Ness RK4 Radio Key Alarm Remotes - 4 Button Wireless Key Fob Twin Pack (106-167)
Regular price $119.00Sale price $119.00 Regular priceUnit price per$149.00 -
Vendor:Reliance XR, reliance XR ProReliance XR Touch Keypad NXX-1820 - 3.5" Touchscreen for XR & XR Pro Alarms
Regular price $340.00Sale price $340.00 Regular priceUnit price per -
SaleSold outVendor:Ness SecurityNess KPX LCD Keypad White - Backlit Display for D8XCel & D16XCel Panels (106-310)
Regular price $145.00Sale price $145.00 Regular priceUnit price per$199.00 -
SaleVendor:Ness SecurityNess Lux Hardwired Quad PIR Motion Detector with LED Night Light - 15m Pet Immune
Only 7 leftRegular price $67.00Sale price $67.00 Regular priceUnit price per$139.00 -
Vendor:Reliance XR, reliance XR ProHills Reliance XR / ZeroWire System 80 Plus Two Way 4 Button Remote
Regular price $89.00Sale price $89.00 Regular priceUnit price per -
SaleVendor:Ness SecurityNess Security 4G GSM Dialler 106-490NS Gen2 Unlocked
Only 3 leftRegular price $229.00Sale price $229.00 Regular priceUnit price per$329.00 -
Vendor:Reliance XR15m Pet Immune PIR Motion Detector GP15 | Hills XR, XRPro & Ness Compatible
Regular price $39.00Sale price $39.00 Regular priceUnit price per -
Vendor:Ness SecurityNess XIR100H Xline Series PIR Motion Detector - 15m Range Digital Analysis
Only 2 leftRegular price $49.95Sale price $49.95 Regular priceUnit price per -
Vendor:Reliance XR, reliance XR ProReliance NX Combo Siren & Strobe Kit
Regular price $33.00Sale price $33.00 Regular priceUnit price per -
SaleVendor:Reliance XRHills 4 Button Alarm Remote S1896A - Wireless Keyfob for NX & Reliance Systems
Regular price $49.95Sale price $49.95 Regular priceUnit price per$89.00 -
Vendor:Ness SecurityNess Slim Line External Alarm Siren & Strobe Combination - 115dB Weatherproof
Only 1 leftRegular price $44.95Sale price $44.95 Regular priceUnit price per -
Vendor:Reliance XRHills Reliance VoiceNav Alarm Keypad S1794A – NX & XR Compatible
Only 1 leftRegular price $257.00Sale price $257.00 Regular priceUnit price per -
Vendor:Ness SecurityNESS RR3 MICRO RADIO REED (106-091)
Only 4 leftRegular price $53.95Sale price $53.95 Regular priceUnit price per -
SaleVendor:Ness SecurityNess Security Quantum-Q Quad PIR Motion Detector - NEW Model
Only 11 leftRegular price $41.95Sale price $41.95 Regular priceUnit price per$89.00 -
Vendor:Reliance XRHills Reliance TouchNav Touchscreen Alarm Keypad S3237A – NX & XR Compatible
Only 4 leftRegular price $342.00Sale price $342.00 Regular priceUnit price per -
SaleVendor:Reliance XRHills Reliance Remote Kit S1890A | Arm & Disarm NX & XR Alarms
Only 4 leftRegular price $95.95Sale price $95.95 Regular priceUnit price per$165.00 -
SaleVendor:Ness SecurityNess Navigator Gen2 Touchscreen Keypad - 3.5" Color Display for D8XCel & DPlus (106-101)
Regular price $178.00Sale price $178.00 Regular priceUnit price per$255.00 -
SaleVendor:Ness SecurityNess Photoelectric Smoke Alarm - CSIRO Certified AS3786 with 9V Battery Backup (101-289B)
Regular price $125.00Sale price $125.00 Regular priceUnit price per$189.00 -
Vendor:Ness SecurityNess DPlus-L24 Local Expander - Zones 9-24
Only 4 leftRegular price $89.00Sale price $89.00 Regular priceUnit price per -
Vendor:HikvisionHikvision AX PRO Series Wireless PIR-Glass Break Security Detector DS-PDPG12P-EG2-WB
Regular price $121.90Sale price $121.90 Regular priceUnit price per -
SaleVendor:Reliance XRHills VoiceNav Lite LED Codepad
Only 3 leftRegular price $139.95Sale price $139.95 Regular priceUnit price per$225.00 -
SaleVendor:Ness SecurityNess 3+1 Radio Key Alarm Remote (106-178) | 4-Button Waterproof Wireless Key Fob
Only 8 leftRegular price $65.95Sale price $65.95 Regular priceUnit price per$99.00 -
Vendor:Ness SecurityNess XLINE Series PIR Mounting Bracket - Adjustable Detector Mount | 100-236
Only 9 leftRegular price $16.95Sale price $16.95 Regular priceUnit price per -
SaleVendor:Reliance XRHeavy Duty Roller Shutter Reed Switch 2202A-L28 | Garage & External Door Alarm Sensor
Only 6 leftRegular price $59.95Sale price $59.95 Regular priceUnit price per$79.00 -
Vendor:Ness SecurityNess RK4 Radio Key & Receiver Kit – 4-Button Wireless Remote & Interface for Alarm Systems
Regular price $159.00Sale price $159.00 Regular priceUnit price per -
SaleVendor:Ness SecurityNess 4G dialler with embedded Telstra SIM
Only 3 leftRegular price $235.00Sale price $235.00 Regular priceUnit price per$329.00 -
Vendor:AjaxAjax KeyPad Outdoor Jeweller – Wireless Outdoor Security Keypad
Regular price $0.00Sale price $0.00 Regular priceUnit price per -
Vendor:AjaxAJAX Combiprotect PIR With Glass Break Detector - White
Regular price $0.00Sale price $0.00 Regular priceUnit price per$145.00 -
Vendor:AjaxAJAX COMBIPROTECT PIR WITH GLASS BREAK DETECTOR BLACK
Regular price $0.00Sale price $0.00 Regular priceUnit price per$145.00 -
Vendor:Ness SecurityNess Wireless Door Sensor | Slim Line Reed | 902-928 MHz | Battery Powered
Only 6 leftRegular price $125.95Sale price $125.95 Regular priceUnit price per -
SaleVendor:Reliance XR, reliance XR ProHills Reliance XR S97509 Stand - Alone Wireless Outdoor Siren
Regular price $379.00Sale price $379.00 Regular priceUnit price per$430.00 -
SaleVendor:Reliance XR, reliance XR ProHills Reliance Stand-Alone 80Plus Wireless Indoor Siren
Regular price $305.00Sale price $305.00 Regular priceUnit price per$430.00 -
SaleVendor:Ness SecurityNess XDT200H Digital Dual Technology Motion Detector - 15m Range PIR & Microwave Sensor
Only 10 leftRegular price $113.00Sale price $113.00 Regular priceUnit price per$145.00 -
Vendor:Hikvision HiLookHikvision Hilook HA-Alarm Wired PIR
Regular price $39.95Sale price $39.95 Regular priceUnit price per -
Vendor:Hikvision HiLookHikvision Hilook HA-Alarm Siren Outdoor
Regular price $49.95Sale price $49.95 Regular priceUnit price per -
Vendor:Ness SecurityDPlus- 4G Module inc SIM
Only 10 leftRegular price $198.00Sale price $198.00 Regular priceUnit price per -
Vendor:Ness SecurityNess DPlus-L16 Local Expander - Zones 9-16
Only 6 leftRegular price $89.00Sale price $89.00 Regular priceUnit price per -
Vendor:Reliance XRHills Reliance 1830 Alarm Keypad NXG-1830-EUR – XR & XRPro Compatible
Regular price $229.00Sale price $229.00 Regular priceUnit price per -
Vendor:Ness SecurityNess X-TWR D8-D16 TWR Radio Interface
Only 5 leftRegular price $142.00Sale price $142.00 Regular priceUnit price per -
Vendor:Ness SecurityNess Security Quantum Quad PET PIR Motion Detector - Pet Immune
Only 12 leftRegular price $61.95Sale price $61.95 Regular priceUnit price per -
Vendor:Reliance XRPIR Mounting Bracket for 15M Pet Immune PIR Detector
Regular price $29.95Sale price $29.95 Regular priceUnit price per -
Vendor:Reliance XRProReliance Alarm 4G/WiFi Module XR Series NXX-4G-WFSIM-AU
Only 10 leftRegular price $291.00Sale price $291.00 Regular priceUnit price per -
Vendor:Reliance XROptex FlipX Pet Immune PIR Detector FLX-S-ST-BKT
Only 13 leftRegular price $53.50Sale price $53.50 Regular priceUnit price per -
Vendor:HikvisionHikvision AX PRO Wireless OutdoorSiren Blue
Regular price $149.95Sale price $149.95 Regular priceUnit price per$0.00 -
Vendor:Reliance XR, reliance XR ProHills Reliance XR 80Plus Wireless PIR
Only 10 leftRegular price $139.00Sale price $139.00 Regular priceUnit price per$0.00
Security Alarm Accessories
Shop Alarm Accessories for Complete Security Solutions in Australia
Enhance your home or business security with high-quality alarm accessories from Home Security Online. Our comprehensive range is designed to work seamlessly with your existing alarm system, providing added functionality, convenience, and peace of mind. Whether you need additional motion sensors, alarm sirens, or alarm remote controls, we have everything you need to customise and upgrade your setup.
Types of Security Alarm Accessories Available
- Motion Detectors – Add extra protection to key areas with PIR motion detectors that trigger your alarm upon detecting movement.
- Door and Window Sensors – Protect all entry points with reliable sensors that alert you instantly if a breach occurs.
- Alarm Sirens – Ensure your alarm is heard loud and clear with internal or external sirens designed to deter intruders.
- GSM Diallers – Keep your alarm communicating via a 4G pathway when no landline is available.
- Keypads and Alarm Remotes – Control your alarm system with ease. Replace existing keypads or remotes from our extensive range including the Ness Security RK4, Ness 3+1 Alarm Remote, and the Hills Reliance S1896A 4-Button Activator compatible with NX4, NX8, NX16 and R128 alarm panels.
Why Buy Alarm Accessories from Home Security Online?
At Home Security Online, we stock alarm accessories from Australia's most trusted security brands — including Ness Security, Bosch, and Hills Reliance — built to the highest standards of quality and reliability. Get expert advice and fast shipping Australia-wide so your home or business stays protected around the clock.