Door Knock Sensor Transmitter CA-DXH MSPV-Tools you can use it to

you can use it to stream music from your smartphone

even when you're just walking or doing some light activity

No scrubbing needed - cleans in only minutes

non-abrasive towels won’t bunch up during use

Sleek design (about 5

Door Knock Sensor Transmitter CA-DXH MSPV-Tools you can use it toYou can easily attach the Door Knocking Sensor (Model CA DX, sold separately) to this hanger and hang it on your door knob to detect the knocking on your door. The CA DX sensor sends a wireless signal to trigger the CA 360 to alert you that someone is at the door. Ideal for both home and hotel stay applications. Product Specifications: Operating Frequency: 2. 4 Ghz Operating Range: Up to 210 ft, open space Battery Type: Two AA size alkaline (not