A. Single function button。
B. Easy to operate and Security by Obscurity.
C. Beauty appearance and de-skilled button.
D. Scientific address code，up to 100 million after permutation and combination. This make every emergency button has unique address code, Similar products Without the permission of the user can't control the user's wireless products.,
E. Low consumption, show signal output status.
F. Compatible with all our wireless device which use the same frequency.
Code：28-digit ID，8-digit function code, total 36 digits data code.
Voltage：11.5-12.5V，use single one 7A alkaline battery，working life about half year.
Indication ：LED light