Discrete Signal Trigger
The SLA-B02K activates sound and light warning after receiving a switch signal. It can work with PLCs, relays, security cameras and automation systems when the signal type matches.
Best for
Dry/wet-contact control systems
A good choice if you need
- External signal or relay trigger
- Adjustable sound: 0-120 dB
- Custom alarm audio upload
- Audible + visual warning
How it works
- An external switch, relay or signal changes state
- The alarm receives the trigger
- The configured warning activates
YASONG Alarm
Signal Trigger
YASONG SLA-B02K 120dB Discrete Signal Alarm Siren, 25W, 12 Tones, IP54, USB Upload, LED Strobe
0-120 dB
25W
IP54
Best for
Dry/wet-contact control systems
A good choice if you need
- External signal or relay trigger
- Adjustable sound: 0-120 dB
- Custom alarm audio upload
- Audible + visual warning
How it works
- An external switch, relay or signal changes state
- The alarm receives the trigger
- The configured warning activates
$93.01
Before You Buy
Please confirm whether your external device outputs a passive dry contact signal or an active wet contact signal before ordering. This alarm requires wiring and must match the correct signal type.
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Is this model right for you?
Check the capabilities that matter before you choose a configuration.
If you need
This model
Dry-contact / signal input
✓
Adjustable volume
✓
Custom alarm audio
✓
Audible + visual warning
✓
IP54 protection
✓
Why choose this model?
The features that most directly affect how this model works and where it fits.
Dry or Wet Contact Compatibility
The product page reminds users to confirm whether the external device outputs a passive dry contact signal or an active wet contact signal. Choosing the wrong signal type may prevent the alarm from working.
Adjustable 120dB Sound
The alarm supports 0–120dB volume adjustment by remote control. This helps match the warning sound to quiet offices, loud workshops or large warehouses.
Key Specifications
Quick technical checks before ordering.
- Sound Level
- 0-120 dB
- Power
- 25W
- Trigger Mode
- Discrete switch signal trigger; passive dry contact or active wet contact
- Control Mode
- Remote control for volume adjustment; signal-triggered activation
- Alarm Mode
- Sound and light alarm simultaneously
- Tone
- 12 siren tones
- Volume Adjustment
- 0–120dB, adjustable by remote control
- Protection Rating
- IP54
- Installation Method
- Wall mounting & Bottom mounting
- Input Voltage
- DC12V / DC24V / AC110V / AC220V
Product Overview
The YASONG SLA-B02K discrete signal alarm siren combines a 0–120dB adjustable horn, 25W alarm power and LED strobe warning light for PLC systems, relays, security cameras, automation systems, warehouses, factories and outdoor industrial warning areas.
This model works by switch signal activation: after wiring, the siren triggers both audible and visual alerts when it receives a discrete switch signal from a connected external device.
- Discrete signal trigger for PLC, relay, camera and automation linkage
- 0–120dB adjustable volume controlled by remote control
- 12 built-in tones for different warning needs
- USB sound upload for personalized alarm tones
- IP54 protection for indoor and outdoor industrial use
Please confirm whether your device outputs a passive dry contact signal or an active wet contact signal before ordering. Wiring is required, and the alarm does not come with a plug.
Full Technical SpecificationsDetailed product data from the available product information.
- Product Type
- Discrete/Switch Signal Alarm Siren
- Input Voltage
- DC12V / DC24V / AC110V / AC220V
- Power
- 25W
- Sound Level
- 0-120 dB
- Tone
- 12 siren tones
- Volume Adjustment
- 0–120dB, adjustable by remote control
- Alarm Mode
- Sound and light alarm simultaneously
- Trigger Mode
- Discrete switch signal trigger; passive dry contact or active wet contact
- Control Mode
- Remote control for volume adjustment; signal-triggered activation
- Work Mode
- Standby after wiring and power-on; triggers sound and LED strobe after receiving a switch signal
- Light Source
- LED lamp beads
- Lighting Mode
- LED Strobe
- Protection Rating
- IP54
- Installation Method
- Wall mounting & Bottom mounting
- Operating Temperature
- -40℃ to 70℃
- Material
- Cold-rolled steel & PS
- Net Weight
- 3.8kg
- Package Dimensions
- 49cm*33cm*25cm(1pcs)
- Remote Control Function
- Volume control by remote control
- USB Interface
- Upload personalized alarm tones
- Application Scenarios
- PLC systems, relays, security cameras, automation systems, warehouses, factories, noisy industrial environments, open areas, outdoor warning areas
- Customization
- USB personalized alarm tone upload, passive dry contact or active wet contact options, voltage options
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