How you activate this siren, is there a button on this siren or need a signal, what kind of signal

You would need to connect it to a compatible alarm control panel. The alarm panel provides the control signal and power to the siren.

can this be wired in with stranded wire to our Honeywell /ademco vista 20p? also usable outdoor but under cover?

Yes these are standard sirens for any Ademco (and many other) systems. Yes they can be used outside covered from the weather such as under an eve. I have mounted then inside eve vents and attic vents too - Ron

Can multiple Wave-2 sirens be connected to a Vista 20p? If so, how are they wired (serial or parallel)?

I don't think they can be. I tried both ways and neither worked. I only have 1 of the 2 horns wired on my system. I couldn't get both to work I think they pull too many amps for the little system. If you do find a way please let me know

Seriously wish this had a flashing light is there one just s few dollars more that’s WiFi Soren with left?

Just know it isn't that quick. Even if you had wifi, you would still need software to connect to wifi and a relay control mechanism to provide power to siren. I uses a PIR (passive infrared sensor) plus relay to activate mine.

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Honeywell WAVE-2 Two Tone Siren

Product ID: 1143287

Details

Brand
Honeywell
Color
White
Compatible Devices
Konnected
Power Source
Corded
Product Dimensions
5"L x 4"W x

⚡500mA power draw @12V

🔊106dB piercing alert

🔧Hinged case, no disassembly

NT$1596

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚨 Command attention with the WAVE-2 — where power meets effortless style!

POWERFUL ALERT - 106dB sound pressure ensures your alarm is impossible to ignore.
COMPACT SLEEK - Fits standard single gang box size, blending seamlessly into any environment.
VERSATILE MOUNTING - Mount it on corners, ceilings, vertically or horizontally with zero extra hardware.
RELIABLE PERFORMANCE - Consistent 500mA current draw at 12VDC for steady, dependable operation.
EFFORTLESS INSTALLATION - Hinged case design means no disassembly—get it up and running in minutes.

The Honeywell WAVE-2 Two Tone Siren delivers a robust 106dB alarm sound powered by a 12VDC, 500mA current. Its innovative hinged case design allows quick installation without disassembly, supporting versatile mounting options including corner and ceiling placements. Compact and compatible with standard single gang boxes, it offers reliable, high-decibel alerts ideal for professional security setups.

Specifications

ASIN	B0006BCCAE
Audible Noise	106 Decibels
Best Sellers Rank	#195 in Security Horns & Sirens
Brand	Honeywell
Built-In Media	Alarm
Color	White
Compatible Devices	Konnected
Control Method	Touch
Customer Reviews	4.5 4.5 out of 5 stars (724)
Item Dimensions L x W x H	5"L x 4"W x 2"H
Item Weight	16 ounces
Manufacturer	Honeywell
Manufacturer Warranty Description	No Warranty
Maximum Range	1 Meters
Mfr Part Number	WAVE2
Model Number	WAVE2
Mounting Type	Wall Mount, Ceiling Mount
Power Source	Corded Electric
UPC	781410193437
Unit Count	1.0 Count
Voltage	12 Volts

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