| Marshall Mossberg is the customer service and tech rep for DTC Territory- 1-800-523-1227 E-mail Marshall with GRI |
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| GRI Manufactures High Quality Security Products and Burglar Alarm Switches. | |
| Recessed Magnetic Contacts | Surface Mount Magnetic Contacts |
| Liquid Level Sensors (Nonvolatile liquids such as water) | Temperature and Humidity Variation Sensors |
| Pool Alarms E-Z duct Door Annunciator Series | Specialty Devices |
| Click here to print info sheet on Water and Temperature Sensors | |
