Description

1. LCD display,with electronic clock function
2. Dual-talk mode and single-talk mode switch freely
3. Handfree ask help,handfree volume adjustable
4. Special picture design button that make user easy to remember and operate
5. Ask for help automatically,connect alarm phone call firstly
6. Wired/wireless remote call for help
7. Telephone line get through/breakup situatioin check
8. Control panel is in compellent arm condition,once connect with power,it can work normally
9. Li-battery optional,please add $3.8.