There are 35 ring tones optional and alarm volume adjustable
Super easy to set up(only two setting buttons)
Can be powered by the included AC adaptor or can run on 4 pieces AA(1.5V) batteries
Extra alarm receiver compatible with the original driveway alarm kit by HTZSAFE
The HTZSAFE alarm receiver total has 32 wireless zones and 35 ring tones optional,alrm volume adjustable,compatible with the driveway alarm KIT and solar beam sensor by HTZSAFE;can be powered by the included AC adaptor or run on 4 pieces AA(1.5V) batteries