diff --git a/app/src/components/ModuleControls/index.js b/app/src/components/ModuleControls/index.js
index d8e0d8921d9..99262e26328 100644
--- a/app/src/components/ModuleControls/index.js
+++ b/app/src/components/ModuleControls/index.js
@@ -4,7 +4,7 @@ import { connect } from 'react-redux'
 import ModuleData from './ModuleData'
 import TemperatureControls from './TemperatureControls'
 
-import { setTargetTemp } from '../../robot-api'
+import { sendModuleCommand } from '../../robot-api'
 
 import type { State, Dispatch } from '../../types'
 import type { TempDeckModule, ModuleCommandRequest } from '../../robot-api'
@@ -16,7 +16,7 @@ type OP = {|
 |}
 
 type DP = {|
-  setTargetTemp: (request: ModuleCommandRequest) => mixed,
+  sendModuleCommand: (request: ModuleCommandRequest) => mixed,
 |}
 
 type Props = { ...OP, ...DP }
@@ -27,13 +27,13 @@ export default connect<Props, OP, {||}, DP, State, Dispatch>(
 )(ModuleControls)
 
 function ModuleControls(props: Props) {
-  const { module, setTargetTemp } = props
+  const { module, sendModuleCommand } = props
   const { currentTemp, targetTemp } = module.data
 
   return (
     <>
       <ModuleData currentTemp={currentTemp} targetTemp={targetTemp} />
-      <TemperatureControls setTemp={setTargetTemp} />
+      <TemperatureControls setTemp={sendModuleCommand} />
     </>
   )
 }
@@ -43,6 +43,7 @@ function mapDispatchToProps(dispatch: Dispatch, ownProps: OP): DP {
   const { serial } = module
 
   return {
-    setTargetTemp: request => dispatch(setTargetTemp(robot, serial, request)),
+    sendModuleCommand: request =>
+      dispatch(sendModuleCommand(robot, serial, request)),
   }
 }
diff --git a/app/src/components/ModuleLiveStatusCards/index.js b/app/src/components/ModuleLiveStatusCards/index.js
index 121fac4b142..5a9564109b0 100644
--- a/app/src/components/ModuleLiveStatusCards/index.js
+++ b/app/src/components/ModuleLiveStatusCards/index.js
@@ -6,7 +6,7 @@ import { getConnectedRobot } from '../../discovery'
 import {
   fetchModules,
   getModulesState,
-  setTargetTemp,
+  sendModuleCommand,
   type ModuleCommandRequest,
   type Module,
 } from '../../robot-api'
@@ -115,7 +115,7 @@ function mapDispatchToProps(dispatch: Dispatch): DP {
   return {
     _fetchModules: _robot => dispatch(fetchModules(_robot)),
     _sendModuleCommand: (_robot, serial, request) =>
-      dispatch(setTargetTemp(_robot, serial, request)),
+      dispatch(sendModuleCommand(_robot, serial, request)),
   }
 }
 
diff --git a/app/src/components/PrepareModules/index.js b/app/src/components/PrepareModules/index.js
new file mode 100644
index 00000000000..f1ab7e01def
--- /dev/null
+++ b/app/src/components/PrepareModules/index.js
@@ -0,0 +1,91 @@
+// @flow
+import * as React from 'react'
+import { useDispatch } from 'react-redux'
+import some from 'lodash/some'
+import {
+  useInterval,
+  PrimaryButton,
+  AlertModal,
+  Icon,
+} from '@opentrons/components'
+
+import {
+  fetchModules,
+  sendModuleCommand,
+  type Module,
+  type RobotHost,
+} from '../../robot-api'
+import type { Dispatch } from '../../types'
+import DeckMap from '../DeckMap'
+import styles from './styles.css'
+import { Portal } from '../portal'
+
+const FETCH_MODULES_POLL_INTERVAL_MS = 1000
+
+type Props = {| robot: RobotHost, modules: Array<Module> |}
+
+function PrepareModules(props: Props) {
+  const { modules, robot } = props
+
+  const dispatch = useDispatch<Dispatch>()
+
+  // update on interval to respond to prepared modules
+  useInterval(
+    () => robot && dispatch(fetchModules(robot)),
+    FETCH_MODULES_POLL_INTERVAL_MS
+  )
+
+  const handleOpenLidClick = () => {
+    modules
+      .filter(mod => mod.name === 'thermocycler')
+      .forEach(
+        mod =>
+          robot &&
+          dispatch(
+            sendModuleCommand(robot, mod.serial, { command_type: 'open' })
+          )
+      )
+  }
+
+  const isHandling = some(
+    modules,
+    mod => mod.name === 'thermocycler' && mod.data?.lid === 'in_between'
+  )
+  return (
+    <div className={styles.page_content_dark}>
+      <div className={styles.deck_map_wrapper}>
+        <DeckMap className={styles.deck_map} modulesRequired />
+      </div>
+      <Portal>
+        <AlertModal
+          iconName={null}
+          heading="Open Thermocycler Module lid for calibration"
+        >
+          <p>
+            The Thermocycler Module&apos;s lid is closed. Please open the lid in
+            order to proceed with calibration.
+          </p>
+          <PrimaryButton
+            className={styles.open_lid_button}
+            onClick={handleOpenLidClick}
+            // disabled={isHandling}  TODO: uncomment when optical latches report 'closed'
+          >
+            {isHandling ? (
+              <>
+                <Icon
+                  name="ot-spinner"
+                  className={styles.in_progress_spinner}
+                  spin
+                />
+              </>
+            ) : (
+              'Open Lid'
+            )}
+          </PrimaryButton>
+        </AlertModal>
+      </Portal>
+    </div>
+  )
+}
+
+export default PrepareModules
diff --git a/app/src/components/PrepareModules/styles.css b/app/src/components/PrepareModules/styles.css
new file mode 100644
index 00000000000..39d8d335363
--- /dev/null
+++ b/app/src/components/PrepareModules/styles.css
@@ -0,0 +1,62 @@
+@import '@opentrons/components';
+
+.alert {
+  position: absolute;
+  top: 3rem;
+  left: 0;
+  right: 0;
+}
+
+.prompt {
+  padding-top: 2rem;
+  flex: none;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+}
+
+.prompt_text {
+  @apply --font-header-light;
+
+  font-weight: normal;
+  margin: 0.5rem 0;
+  text-align: center;
+}
+
+.prompt_button {
+  display: block;
+  width: auto;
+  margin: 0.5rem 0 1rem 0;
+  padding-left: 3rem;
+  padding-right: 3rem;
+}
+
+.page_content_dark {
+  display: flex;
+  padding: 1rem;
+  flex-direction: column;
+  align-items: center;
+  background-color: color(var(--c-black) alpha(0.99));
+  height: 100%;
+}
+
+.deck_map_wrapper {
+  flex: 1 1 0;
+  align-self: stretch;
+  display: flex;
+  background-color: var(--c-bg-light);
+  border-radius: 6px;
+}
+
+.deck_map {
+  flex: 1;
+}
+
+.in_progress_spinner {
+  height: 1rem;
+}
+
+.open_lid_button {
+  margin: 2rem 0 0.5rem 0;
+}
diff --git a/app/src/pages/Calibrate/Labware.js b/app/src/pages/Calibrate/Labware.js
index 24a71ffc9bd..ec9243bb61d 100644
--- a/app/src/pages/Calibrate/Labware.js
+++ b/app/src/pages/Calibrate/Labware.js
@@ -7,7 +7,8 @@ import { push } from 'connected-react-router'
 
 import { selectors as robotSelectors } from '../../robot'
 import { getConnectedRobot } from '../../discovery'
-import { getRobotSettingsState } from '../../robot-api'
+import { getRobotSettingsState, type Module } from '../../robot-api'
+import { getUnpreparedModules } from '../../robot-api/resources/modules'
 
 import Page from '../../components/Page'
 import CalibrateLabware from '../../components/CalibrateLabware'
@@ -15,6 +16,7 @@ import SessionHeader from '../../components/SessionHeader'
 import ReviewDeck from '../../components/ReviewDeck'
 import ConfirmModal from '../../components/CalibrateLabware/ConfirmModal'
 import ConnectModules from '../../components/ConnectModules'
+import PrepareModules from '../../components/PrepareModules'
 
 import type { ContextRouter } from 'react-router'
 import type { State, Dispatch } from '../../types'
@@ -28,7 +30,8 @@ type SP = {|
   labware: ?Labware,
   calibrateToBottom: boolean,
   robot: ?Robot,
-  reviewModules: ?boolean,
+  hasModulesLeftToReview: ?boolean,
+  unpreparedModules: Array<Module>,
 |}
 
 type DP = {| onBackClick: () => mixed |}
@@ -47,8 +50,9 @@ function SetupDeckPage(props: Props) {
     robot,
     calibrateToBottom,
     labware,
+    unpreparedModules,
     deckPopulated,
-    reviewModules,
+    hasModulesLeftToReview,
     onBackClick,
     match: {
       url,
@@ -56,10 +60,16 @@ function SetupDeckPage(props: Props) {
     },
   } = props
 
+  if (!robot) {
+    return <Redirect to="/" />
+  }
+
   const renderPage = () => {
-    if (reviewModules && robot) {
+    if (hasModulesLeftToReview) {
       return <ConnectModules robot={robot} />
-    } else if (!deckPopulated && !reviewModules) {
+    } else if (unpreparedModules.length > 0) {
+      return <PrepareModules robot={robot} modules={unpreparedModules} />
+    } else if (!deckPopulated && !hasModulesLeftToReview) {
       return <ReviewDeck slot={slot} />
     } else {
       return <CalibrateLabware labware={labware} />
@@ -92,6 +102,9 @@ function mapStateToProps(state: State, ownProps: OP): SP {
   const { slot } = ownProps.match.params
   const labware = robotSelectors.getLabware(state)
   const currentLabware = labware.find(lw => lw.slot === slot)
+  const modules = robotSelectors.getModules(state)
+  const hasModulesLeftToReview =
+    modules.length > 0 && !robotSelectors.getModulesReviewed(state)
   const robot = getConnectedRobot(state)
   const settings = robot && getRobotSettingsState(state, robot.name)
 
@@ -100,16 +113,13 @@ function mapStateToProps(state: State, ownProps: OP): SP {
     settings && settings.find(s => s.id === 'calibrateToBottom')
   const calibrateToBottom = !!calToBottomFlag && calToBottomFlag.value === true
 
-  const modulesRequired = robotSelectors.getModules(state).length > 0
-  const modulesReviewed = robotSelectors.getModulesReviewed(state)
-  const reviewModules = modulesRequired && !modulesReviewed
-
   return {
     calibrateToBottom,
-    reviewModules,
     robot,
-    deckPopulated: !!robotSelectors.getDeckPopulated(state),
     labware: currentLabware,
+    deckPopulated: !!robotSelectors.getDeckPopulated(state),
+    hasModulesLeftToReview,
+    unpreparedModules: getUnpreparedModules(state),
   }
 }
 
diff --git a/app/src/robot-api/resources/modules.js b/app/src/robot-api/resources/modules.js
index 60c5ceac8f5..6f39b15c9a9 100644
--- a/app/src/robot-api/resources/modules.js
+++ b/app/src/robot-api/resources/modules.js
@@ -11,6 +11,9 @@ import {
   POST,
 } from '../utils'
 
+import { getConnectedRobot } from '../../discovery'
+import { selectors as robotSelectors } from '../../robot'
+
 import type { State as AppState, ActionLike } from '../../types'
 import type { RobotHost, RobotApiAction } from '../types'
 import type {
@@ -26,8 +29,8 @@ export const FETCH_MODULES: 'robotApi:FETCH_MODULES' = 'robotApi:FETCH_MODULES'
 export const FETCH_MODULE_DATA: 'robotApi:FETCH_MODULE_DATA' =
   'robotApi:FETCH_MODULE_DATA'
 
-export const SET_MODULE_TARGET_TEMP: 'robotApi:SET_MODULE_TARGET_TEMP' =
-  'robotApi:SET_MODULE_TARGET_TEMP'
+export const SEND_MODULE_COMMAND: 'robotApi:SEND_MODULE_COMMAND' =
+  'robotApi:SEND_MODULE_COMMAND'
 
 export const MODULES_PATH = '/modules'
 // TODO(mc, 2019-04-29): these endpoints should not have different paths
@@ -50,24 +53,24 @@ export const fetchModuleData = (
   meta: { id },
 })
 
-export const setTargetTemp = (
+export const sendModuleCommand = (
   host: RobotHost,
   id: string,
   body: ModuleCommandRequest
 ): RobotApiAction => ({
-  type: SET_MODULE_TARGET_TEMP,
+  type: SEND_MODULE_COMMAND,
   payload: { host, body, method: POST, path: `/modules/${id}` },
   meta: { id },
 })
 
 const fetchModulesEpic = createBaseRobotApiEpic(FETCH_MODULES)
 const fetchModuleDataEpic = createBaseRobotApiEpic(FETCH_MODULE_DATA)
-const setTargetTempEpic = createBaseRobotApiEpic(SET_MODULE_TARGET_TEMP)
+const sendModuleCommandEpic = createBaseRobotApiEpic(SEND_MODULE_COMMAND)
 
 export const modulesEpic = combineEpics(
   fetchModulesEpic,
   fetchModuleDataEpic,
-  setTargetTempEpic
+  sendModuleCommandEpic
 )
 
 export function modulesReducer(
@@ -110,3 +113,32 @@ export function getModulesState(
   // TODO: remove this filter when feature flag removed
   return modules.filter(m => tcEnabled || m.name !== 'thermocycler')
 }
+
+const PREPARABLE_MODULES = ['thermocycler']
+
+export const getUnpreparedModules = (state: AppState): Array<Module> => {
+  const robot = getConnectedRobot(state)
+  if (!robot) return []
+
+  const sessionModules = robotSelectors.getModules(state)
+  const actualModules = getModulesState(state, robot.name) || []
+
+  const preparableModules = sessionModules.reduce(
+    (acc, mod) =>
+      PREPARABLE_MODULES.includes(mod.name) ? [...acc, mod.name] : acc,
+    []
+  )
+  if (preparableModules.length > 0) {
+    const actualPreparableModules = actualModules.filter(mod =>
+      preparableModules.includes(mod.name)
+    )
+    return actualPreparableModules.reduce((acc, mod) => {
+      if (mod.name === 'thermocycler' && mod.data.lid !== 'open') {
+        return [...acc, mod]
+      }
+      return acc
+    }, [])
+  } else {
+    return []
+  }
+}
diff --git a/app/src/robot-api/resources/types.js b/app/src/robot-api/resources/types.js
index e0ea189e53d..8990f0c63c5 100644
--- a/app/src/robot-api/resources/types.js
+++ b/app/src/robot-api/resources/types.js
@@ -47,7 +47,7 @@ export type MagDeckData = {|
 |}
 
 export type ThermocyclerData = {|
-  lid: 'open' | 'closed',
+  lid: 'open' | 'closed' | 'in_between',
   lidTarget: ?number,
   lidTemp: number,
   currentTemp: number,
@@ -68,7 +68,7 @@ export type ThermocyclerModule = {|
 |}
 
 export type ModuleCommandRequest = {|
-  command_type: 'set_temperature' | 'deactivate',
+  command_type: 'set_temperature' | 'deactivate' | 'open',
   args?: Array<number>,
 |}
 
diff --git a/app/src/robot-api/types.js b/app/src/robot-api/types.js
index 7138213229a..d8594c9bbae 100644
--- a/app/src/robot-api/types.js
+++ b/app/src/robot-api/types.js
@@ -48,7 +48,7 @@ export type RobotApiAction =
       meta: {| id: string |},
     |}
   | {|
-      type: 'robotApi:SET_MODULE_TARGET_TEMP',
+      type: 'robotApi:SEND_MODULE_COMMAND',
       payload: RobotApiRequest,
       meta: {| id: string |},
     |}