The WT4911 offers 2-way wireless and continuously supervised communication with the ALEXOR Wireless Panel. The signals between the WT4911 and the panel are fully encrypted, prohibiting unauthorized interruption of communication between the two. If the WT4911 siren is disabled or tampered with, ALEXOR will immediately be signaled and the appropriate transmission will instantly be transmitted to the monitoring station. Additionally, one of the other sirens (either indoor or outdoor or ALEXOR’s onboard siren itself) installed on the system will make up for the absence of the WT4911. ALEXOR and IMPASSA supports up to 4 sirens.

Specifications Dimensions ...................................................11˝× 8.5˝× 1.8˝ .............................................(280 mm × 216 mm × 46 mm) Weight...........................................................1.8 lbs (820 g) Output......................................................................100 dB Battery ......................................................1 “D” cell Lithium Battery Life.................................... 2-3 years (typical usage) Operating Temperature............-40° to 158°F (-40° to 70°C) Relative Humidity................................................5% to 95%

Features That Make a Difference: • Siren Output – 100dB • Siren sounds for alarms and squawks • Strobe light functionality for visual indication • Provides temperature to WT5500 Wire-free keypad • Remote test capability • Transmit RF status, low battery and tamper condition • Large print area for company logo • Front and back tamper detection • IP34 rating

The Best Defence is a Good Offence The WT4911 Wireless Outdoor Siren is a fully supervised wireless siren designed to work with the ALEXOR Wireless Panel. The WT4911 combines form and function to provide improved protection against intruders, before they get the chance to enter the home. With its powerful 100dB sounder, the WT4911 will annunciate unwanted entrance to property and premises. The accompanying strobe light also provides a visual warning and deterrent upon activation. The WT4911 distinguishes between burglar and fire alarm by emitting different sounds for each and indicates arm and disarm squawks. Build Your Brand and Your Business The WT4911 siren can be installed anywhere outdoors (or even indoors, for those requiring a louder siren) fast and easy.  A large surface area on the siren allows for security company logos, increasing brand presence and awareness