diff --git a/ontology/yaml/resources/HVAC/entity_types/ABSTRACT.yaml b/ontology/yaml/resources/HVAC/entity_types/ABSTRACT.yaml
index f6c9de776..410f8cd1a 100644
--- a/ontology/yaml/resources/HVAC/entity_types/ABSTRACT.yaml
+++ b/ontology/yaml/resources/HVAC/entity_types/ABSTRACT.yaml
@@ -6675,6 +6675,20 @@ VMADC:
   implements:
   - CONTROL
 
+MAZTM:
+  description: "Zone temperature monitoring for MDF room with high & low temperature alarms, sensor failed alarm "
+  is_abstract: true
+  uses:
+  - high_limit_zone_air_temperature_setpoint
+  - low_limit_zone_air_temperature_setpoint
+  - zone_air_temperature_sensor
+  - high_zone_air_temperature_alarm
+  - low_zone_air_temperature_alarm
+  - failed_zone_air_temperature_alarm
+  - failed_alarm
+  implements:
+  - OPERATIONAL
+
 OAQM:
   guid: "99e4f482-278e-40ee-9524-9f687c41ba22"
   description: "Outside air quality monitoring (particulates and gases)"
diff --git a/ontology/yaml/resources/HVAC/entity_types/SENSOR.yaml b/ontology/yaml/resources/HVAC/entity_types/SENSOR.yaml
index ac2c77d7c..1580b1de1 100644
--- a/ontology/yaml/resources/HVAC/entity_types/SENSOR.yaml
+++ b/ontology/yaml/resources/HVAC/entity_types/SENSOR.yaml
@@ -244,6 +244,13 @@ SENSOR_CO2M_VOCM:
     - CO2M
     - VOCM
 
+SENSOR_MAZTM:
+  description: "zone temperature monitoring with high, low alarm setpoints and unit failed alarms"
+  is_canonical: true
+  implements:
+  - /SENSOR
+  - MAZTM
+
 SENSOR_ZTM_ZHM_CO2M_VOCM_PMM:
   guid: "d5b180db-81b2-4141-ac56-6f5141b60ae6"
   description: "Simple air quality sensor with VOC, particulates, CO2, temperature and humidity monitoring."
diff --git a/ontology/yaml/resources/fields/telemetry_fields.yaml b/ontology/yaml/resources/fields/telemetry_fields.yaml
index fbb0ee417..a1d91d893 100644
--- a/ontology/yaml/resources/fields/telemetry_fields.yaml
+++ b/ontology/yaml/resources/fields/telemetry_fields.yaml
@@ -3129,6 +3129,14 @@ literals:
     fixed_min: 0.0
     flexible_max: 2000.0
 
+- high_limit_zone_air_temperature_setpoint:
+    fixed_min: 255.9259259
+    flexible_max: 338.7037037
+
+- low_limit_zone_air_temperature_setpoint:
+    fixed_min: 255.9259259
+    flexible_max: 338.7037037
+
 - purge_command:
   - ON
   - OFF 
@@ -3139,4 +3147,4 @@ literals:
 
 - low_discharge_air_temperature_alarm:
   - ACTIVE
-  - INACTIVE
\ No newline at end of file
+  - INACTIVE