Depending on which insurance company you use, you may be eligible to receive up to a 20% discount on your homeowner’s insurance. In many cases this discount can more than make up for Derby city monthly monitoring rate. Once you go online with Derby city Security, we will issue you a certificate of alarm. Simply mail/fax that certificate to your insurance company as proof that your location is monitored. They will then be able to apply whatever discount they may offer. Remember, fire alarm monitoring may provide you with an even greater discount!