WisuAlarm Battery Wireless Link Smoke Alarm 5 Pack (10 Year Lithium Battery)

The WisuAlarm DHI-HY-SA40A-R8 Wireless Interconnected Smoke Alarm (Pack of 5) provides reliable whole-property protection using advanced split-spectrum sensing technology.

Designed for domestic homes, rental properties, HMOs and holiday lets, each alarm continuously monitors smoke concentration and responds quickly with both visual and audible alerts. When one alarm activates, all interconnected units sound simultaneously, ensuring occupants are alerted wherever they are in the property.

Each alarm is powered by a sealed 10-year lithium battery and can wirelessly interlink with up to 24 compatible WisuAlarm devices, creating a complete home safety network without additional wiring.

With infrared remote hush capability, low battery warning, and EN 14604 compliance, this five-pack provides a practical and cost-effective solution for protecting larger homes or multiple rooms.

• Pack of 5 × DHI-HY-SA40A-R8 Wireless Interconnected Smoke Alarms

• Split-spectrum photoelectric smoke sensing technology

• Sealed 10-year CR123A lithium battery (non-replaceable)

• Wireless interconnection with up to 24 devices

• 868MHz operating frequency

• Radio range up to 1000m in open air

• Loud 85 dB(A) alarm at 3 metres

• Combined test and hush button

• Infrared remote silencing function

• 9-minute silence duration

• Low battery warning signal

• Visual and audible alarm indication

• Suitable for ceiling mounting

• EN 14604 certified