diff --git a/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.test.tsx b/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.test.tsx
index 211593652fc6d..90152016a030f 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.test.tsx
+++ b/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.test.tsx
@@ -37,6 +37,30 @@ describe('ScheduleItemField', () => {
     expect(mockField.setValue).toHaveBeenCalledWith('5000000s');
   });
 
+  it(`uses the "units" prop when it's passed`, async () => {
+    const mockField = useFormFieldMock<string>({ value: '7d' });
+    const wrapper = mount(
+      <TestProviders>
+        <ScheduleItemField
+          field={mockField}
+          units={['m', 'h', 'd']}
+          dataTestSubj="schedule-item"
+          idAria="idAria"
+        />
+      </TestProviders>
+    );
+
+    expect(wrapper.find('[data-test-subj="interval"]').last().prop('value')).toEqual(7);
+    expect(wrapper.find('[data-test-subj="timeType"]').last().prop('value')).toEqual('d');
+
+    wrapper
+      .find('[data-test-subj="interval"]')
+      .last()
+      .simulate('change', { target: { value: '8' } });
+
+    expect(mockField.setValue).toHaveBeenCalledWith('8d');
+  });
+
   it.each([
     [-10, -5],
     [-5, 0],
diff --git a/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.tsx b/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.tsx
index 2e0f3739ff59a..680501724dd6c 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.tsx
+++ b/x-pack/solutions/security/plugins/security_solution/public/detection_engine/rule_creation/components/schedule_item_field/schedule_item_field.tsx
@@ -29,7 +29,7 @@ interface ScheduleItemProps {
   isDisabled?: boolean;
   minValue?: number;
   maxValue?: number;
-  timeTypes?: string[];
+  units?: string[];
   fullWidth?: boolean;
 }
 
@@ -74,10 +74,10 @@ export function ScheduleItemField({
   idAria,
   minValue = Number.MIN_SAFE_INTEGER,
   maxValue = Number.MAX_SAFE_INTEGER,
-  timeTypes = DEFAULT_TIME_DURATION_UNITS,
+  units = DEFAULT_TIME_DURATION_UNITS,
   fullWidth = false,
 }: ScheduleItemProps): JSX.Element {
-  const [timeType, setTimeType] = useState(timeTypes[0]);
+  const [timeType, setTimeType] = useState(units[0]);
   const [timeVal, setTimeVal] = useState<number>(0);
   const { isInvalid, errorMessage } = getFieldValidityAndErrorMessage(field);
   const { value, setValue } = field;
@@ -92,7 +92,7 @@ export function ScheduleItemField({
 
   const onChangeTimeVal = useCallback<NonNullable<EuiFieldNumberProps['onChange']>>(
     (e) => {
-      const number = parseInt(e.target.value, 10);
+      const number = e.target.value === '' ? minValue : parseInt(e.target.value, 10);
 
       if (Number.isNaN(number)) {
         return;
@@ -112,7 +112,7 @@ export function ScheduleItemField({
     }
 
     const isNegative = value.startsWith('-');
-    const durationRegexp = new RegExp(`^\\-?(\\d+)(${timeTypes.join('|')})$`);
+    const durationRegexp = new RegExp(`^\\-?(\\d+)(${units.join('|')})$`);
     const durationMatchArray = value.match(durationRegexp);
 
     if (!durationMatchArray) {
@@ -124,7 +124,7 @@ export function ScheduleItemField({
 
     setTimeVal(time);
     setTimeType(unit);
-  }, [timeType, timeTypes, timeVal, value]);
+  }, [timeType, units, timeVal, value]);
 
   const label = useMemo(
     () => (
@@ -154,7 +154,7 @@ export function ScheduleItemField({
         append={
           <MyEuiSelect
             fullWidth
-            options={timeTypeOptions.filter((type) => timeTypes.includes(type.value))}
+            options={timeTypeOptions.filter((type) => units.includes(type.value))}
             value={timeType}
             onChange={onChangeTimeType}
             disabled={isDisabled}