3 built-in bark sensors and 1 XL ultrasonic loudspeaker 4 sensitivity settings to indicate what barking level activates the unit Effective on most dogs within range (some dogs may not be responsive to ultrasonic correction) Weatherproof and durable for outdoor as well as indoor use Operates using 6 AA batteries (not included)
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Item# : SPM16048703224
Model # : NB-SBH