STS ulkoherätyskello WK 977 IP - LED, lisäoptisella merkinannolla

In a busy workshop, a delivery entrance, or a home with a large garden, a standard doorbell often goes unnoticed. The STS WK 977 IP solves this by combining a loud 85 dB bell with a bright integrated LED flash, ensuring the signal is both heard and seen even in noisy or visually distracting environments. This wired outdoor bell is ideal as a doorbell extension, an alarm system component, or a general-purpose signaling device.

Key specifications

• Acoustic and optical signaling: integrated LED flash light plus bell/siren tone
• Sound pressure level: 85 dB(A) at 1 meter
• IP44 splash-proof rating for outdoor use
• Operating voltage: 8-12V AC/DC, max. 100 mA current consumption
• UV-resistant plastic housing in white/grey
• Surface wall mount with 2-wire terminal connection
• Operating temperature: -20°C to +50°C

Why choose it

The dual signaling method makes it highly effective in environments where auditory signals alone may be missed. The robust IP44-rated housing withstands rain and UV exposure, ensuring long-term reliability. Its low power consumption and wide voltage range allow integration into existing bell or alarm systems without additional power supplies.

Ideal use cases

• Doorbell extension for homes, offices, or workshops
• Alarm system component for visual and audible alerts
• General signaling in industrial or commercial settings
• Outdoor notification for gates, yards, or loading docks

Good to know

Installation is straightforward with a surface wall mount and two-wire connection. The bell is compatible with most standard doorbell transformers and alarm control panels. For optimal visibility, mount it at eye level or in a location where the LED flash is not obstructed.