diff --git a/src/dialogs/more-info/controls/more-info-lock.js b/src/dialogs/more-info/controls/more-info-lock.js
deleted file mode 100644
index 346e1a8625..0000000000
--- a/src/dialogs/more-info/controls/more-info-lock.js
+++ /dev/null
@@ -1,80 +0,0 @@
-import "@material/mwc-button";
-import "@polymer/paper-input/paper-input";
-import { html } from "@polymer/polymer/lib/utils/html-tag";
-/* eslint-plugin-disable lit */
-import { PolymerElement } from "@polymer/polymer/polymer-element";
-import "../../../components/ha-attributes";
-import LocalizeMixin from "../../../mixins/localize-mixin";
-
-/*
- * @appliesMixin LocalizeMixin
- */
-class MoreInfoLock extends LocalizeMixin(PolymerElement) {
-  static get template() {
-    return html`
-      <style>
-        paper-input {
-          display: inline-block;
-        }
-      </style>
-
-      <template is="dom-if" if="[[stateObj.attributes.code_format]]">
-        <paper-input
-          label="[[localize('ui.card.lock.code')]]"
-          value="{{enteredCode}}"
-          pattern="[[stateObj.attributes.code_format]]"
-          type="password"
-        ></paper-input>
-        <mwc-button
-          on-click="callService"
-          data-service="unlock"
-          hidden$="[[!isLocked]]"
-          >[[localize('ui.card.lock.unlock')]]</mwc-button
-        >
-        <mwc-button
-          on-click="callService"
-          data-service="lock"
-          hidden$="[[isLocked]]"
-          >[[localize('ui.card.lock.lock')]]</mwc-button
-        >
-      </template>
-      <ha-attributes
-        hass="[[hass]]"
-        state-obj="[[stateObj]]"
-        extra-filters="code_format"
-      ></ha-attributes>
-    `;
-  }
-
-  static get properties() {
-    return {
-      hass: Object,
-      stateObj: {
-        type: Object,
-        observer: "stateObjChanged",
-      },
-      enteredCode: {
-        type: String,
-        value: "",
-      },
-      isLocked: Boolean,
-    };
-  }
-
-  stateObjChanged(newVal) {
-    if (newVal) {
-      this.isLocked = newVal.state === "locked";
-    }
-  }
-
-  callService(ev) {
-    const service = ev.target.getAttribute("data-service");
-    const data = {
-      entity_id: this.stateObj.entity_id,
-      code: this.enteredCode,
-    };
-    this.hass.callService("lock", service, data);
-  }
-}
-
-customElements.define("more-info-lock", MoreInfoLock);
diff --git a/src/dialogs/more-info/controls/more-info-lock.ts b/src/dialogs/more-info/controls/more-info-lock.ts
new file mode 100644
index 0000000000..0c380d267f
--- /dev/null
+++ b/src/dialogs/more-info/controls/more-info-lock.ts
@@ -0,0 +1,70 @@
+import "@material/mwc-button";
+import type { HassEntity } from "home-assistant-js-websocket";
+import { css, html, LitElement, TemplateResult } from "lit";
+import { customElement, property, query } from "lit/decorators";
+import "../../../components/ha-attributes";
+import "../../../components/ha-textfield";
+import type { HaTextField } from "../../../components/ha-textfield";
+import type { HomeAssistant } from "../../../types";
+
+@customElement("more-info-lock")
+class MoreInfoLock extends LitElement {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @property({ attribute: false }) public stateObj?: HassEntity;
+
+  @query("ha-textfield") private _textfield?: HaTextField;
+
+  protected render(): TemplateResult {
+    if (!this.hass || !this.stateObj) {
+      return html``;
+    }
+    return html`
+      ${this.stateObj.attributes.code_format
+        ? html`
+            <ha-textfield
+              .label=${this.hass.localize("ui.card.lock.code")}
+              .pattern=${this.stateObj.attributes.code_format}
+              type="password"
+            ></ha-textfield>
+            ${this.stateObj.state === "locked"
+              ? html`<mwc-button
+                  @click=${this._callService}
+                  data-service="unlock"
+                  >${this.hass.localize("ui.card.lock.unlock")}</mwc-button
+                >`
+              : html`<mwc-button @click=${this._callService} data-service="lock"
+                  >${this.hass.localize("ui.card.lock.lock")}</mwc-button
+                >`}
+          `
+        : ""}
+      <ha-attributes
+        .hass=${this.hass}
+        .stateObj=${this.stateObj}
+        extra-filters="code_format"
+      ></ha-attributes>
+    `;
+  }
+
+  private _callService(ev) {
+    const service = ev.target.getAttribute("data-service");
+    const data = {
+      entity_id: this.stateObj!.entity_id,
+      code: this._textfield?.value,
+    };
+    this.hass.callService("lock", service, data);
+  }
+
+  static styles = css`
+    :host {
+      display: flex;
+      align-items: center;
+    }
+  `;
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "more-info-lock": MoreInfoLock;
+  }
+}