At a glance
- Sensor
- Piezoelectric ceramics sensor and temperature sensor
- Operating Temperature
- 25 °C to 55 °C
- Installation
- Wall mount
- Detection Mode
- Detection of mechanical vibrations and temperatures
- Power Supply
- 9 to 15 V DC
Model ARD421Dahua ARD421 Wired Seismic and Vibration Detector
₹7,700 Incl. GST
₹6,525 + 18% GST
At a glance
- Sensor
- Piezoelectric ceramics sensor and temperature sensor
- Operating Temperature
- 25 °C to 55 °C
- Installation
- Wall mount
- Detection Mode
- Detection of mechanical vibrations and temperatures
- Power Supply
- 9 to 15 V DC
Vibration detector for bank vaults, safes, ATMs and strongroom walls, sensing drilling, impact, gas cutting and explosions during an attack. Wired, 5 sensitivity levels, temperature sensor to detect cutting torches, 9 to 15 V DC.
- WarrantyManufacturer warranty under Dahua's terms. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
- InstallationWall mount
Overview
The Dahua ARD421 is a wired vibration (seismic) detector in a zinc and aluminium alloy housing. A piezoelectric ceramic sensor analyses vibrations in concrete or steel and a temperature sensor detects the heat of a cutting torch. It is designed for banks and other high-value places: vaults, safes, ATMs, night safes and strongroom walls, where an attack by drill, impact driver, gas cutting or explosive must be caught early.
Is it right for you?
- It suits a vault, safe, ATM or strongroom wall on a wired alarm panel, wired to a 24-hour zone.
- Use one detector per protected surface, fixed firmly to the concrete or steel.
- It is not a general-purpose intrusion detector for rooms; a door contact, glass-break or motion detector covers those.
- Operating range -25 to 55 °C, up to 95% humidity, non-condensing.
Key features
- Detects impacts, electric drills, impact drivers, gas cutting and explosions.
- On concrete, triggers on impact-driver vibration at 2 to 8 m depth; other strikes need 5 hits; explosions trigger at once.
- On steel plate, 1 to 10 m for impact drivers and 1 to 12 m for repeated strikes.
- Temperature sensor alarms when the temperature rises 10° within 30 seconds, to catch cutting torches.
- Five adjustable sensitivity levels and a two-colour LED.
- Dry-contact relay output, normally closed by default, rated up to 12 V DC, 0.11 A, plus tamper.
- Solid 395 g metal housing, 85 x 37 x 28 mm, wall mounted.
What else you need
A wired alarm panel such as the Dahua ARC2008C-V3 or ARC2016C-V3 with a 24-hour zone, a 9 to 15 V DC supply (it draws 18 mA), and alarm cable.
Installation
An alarm installer should fit it. Fix it firmly to the protected surface, since loose mounting reduces sensitivity, wire the relay and tamper to a 24-hour zone and the power to the panel’s auxiliary output, then set the sensitivity level and test it.
Before you buy
- Mount it rigidly on the protected surface; loose fixing reduces sensitivity.
- One detector per protected surface.
- It needs 9 to 15 V DC, up to 1.2 W.
Features
Size and fit
- Net Weight
- 395 g (0.87 lb)
- Installation
- Wall mount
Technical specifications
Key facts
- What is it?
- Door & Window SensorsBrand Dahua
- How is it powered?
- 9 to 15 V DC
- Which documents are available?
- Datasheet, quick start guide Open documents
- Can SecurityGearHub help with installation?
- Setup guidanceManuals, wiring guides and answers to setup questions. On-site work is arranged separately where available. Ask about installation
- Not stated by the manufacturer
- outdoor rating, box contents
RelatedGuideWireless alarm system guideDocumentsAll Dahua documents
General
- Model / configuration
- ARD421
- Anti-corrosion Level
- Basic Protection
- Indicator Light
- One two-colour LED indicator
- Sensor
- Piezoelectric ceramics sensor and temperature sensor
- Detection Mode
- Detection of mechanical vibrations and temperatures
- Sensitivity
- 5 adjustable sensitivity levels
- Detection Range
- Concrete: alarms when vibrations from impact drivers reach a depth of 2 to 8 m; other objects must strike the area 5 times; explosions trigger alarms immediately. Steel plate: 1 to 10 m for impact drivers, 1 to 12 m when other objects strike the area at least 5 times; explosions trigger alarms immediately.
- Relay
- The default is normally closed
- Operating Current
- 18 mA
- Alarm Current
- 15 mA
- Features and configuration
- Sesmic Detector Wired Sesmic/Vibration Detector
Detects vibrations from impacts, electric drills, impact drivers, gas cutting and explosions.
Alarms when the temperature rises 10° within 30 seconds - Alarm Output
- 1 channel, dry contact, max 12 V DC, 0.11 A
- Installation
- Wall mount
Input
- Power Supply
- 9 to 15 V DC
- Power Consumption
- ≤1.2 W
Protection
- Tamper
- Yes
Environment
- Operating Temperature
- , 25 °C to 55 °C (, 13 °F to 131 °F)
- Operating Humidity
- 0% to 95% (RH), non-condensing
- Storage Temperature
- , 40 °C to 70 °C (, 40 °F to 158 °F)
- Storage Humidity
- 0% to 95% (RH), non-condensing
Physical
- Product Dimensions
- 85 mm × 37 mm × 28 mm (3.35" × 1.46" × 1.10") (L × W × H)
- Net Weight
- 395 g (0.87 lb)
- Gross Weight
- 436 g (0.96 lb)
- Casing Material
- Zinc, aluminium alloy
- Packaging Dimensions
- 106 mm × 100 mm × 41 mm (4.17" × 3.94" × 1.61") (L × W × H)
Approvals
- Certifications
- CE
- Warranty
- Manufacturer warranty under Dahua's terms. How claims work
Product attributes and shipping details
| Brand | Dahua |
|---|
Downloads
Documentation
- Dahua ARD421 datasheetDatasheet · This model · 1.6 MBDownload
User manual
- ARD421 Vibration Detector User Manual (V1.0)Models: ARD421 · Revision V1.0.0Quick start guide · This model · materialfile.dahuasecurity.comDownload
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
What power does it need?
9 to 15 V DC. It draws 18 mA in operation and 15 mA in alarm.
What does it detect?
Vibration from impacts, electric drills, impact drivers, gas cutting and explosions, and a temperature rise of 10° within 30 seconds from a cutting torch.
How much wall does one detector cover?
On concrete it responds to impact-driver vibration at 2 to 8 m depth; on steel plate 1 to 10 m for impact drivers and 1 to 12 m for repeated strikes. Use one per protected surface.
Which panels does it work with?
Any wired panel with a 24-hour zone, such as the Dahua ARC2008C-V3 or ARC2016C-V3.
Can it be used outdoors?
Not stated by the manufacturer. Its operating range is -25 to 55 °C and up to 95% humidity, non-condensing.
Ask about this modelSetup, compatibility, what is in the box
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