One year of satellite communication for use with your SAT4D*. This is how your SAT4D alarm unit communicates with the Sensaphone servers which in turn you can monitor and have an alert you to your customized alarm conditions.
One year of satellite communication for use with your SAT4D*. This is how your SAT4D alarm unit communicates with the Sensaphone servers which in turn you can monitor and have an alert you to your customized alarm conditions.