diff --git a/build/check-bundle-size.ts b/build/check-bundle-size.ts
index 03a3968f..cad65857 100644
--- a/build/check-bundle-size.ts
+++ b/build/check-bundle-size.ts
@@ -39,7 +39,10 @@ const BUDGET_BYTES: Record<string, number> = {
   // replaced. 765 kB leaves ~15 kB of headroom over the measured aggregate.
   // Raised to 790 kB for the MCHOSE A7 V2 mouse and MagDock driver support:
   // the measured aggregate is 779.1 kB, leaving ~11 kB of headroom.
-  ".js": 790_000,
+  // Raised to 800 kB for the ATK ZERO driver (AtkCards.tsx, device/atk.ts)
+  // and the mouse-reported lift-off range plumbing: the measured aggregate is
+  // 790.6 kB, leaving ~9 kB of headroom.
+  ".js": 800_000,
 };
 
 const ASSETS = join("dist", "assets");
diff --git a/src/app/cards/AdvancedCards.tsx b/src/app/cards/AdvancedCards.tsx
index e201ada9..aac2245c 100644
--- a/src/app/cards/AdvancedCards.tsx
+++ b/src/app/cards/AdvancedCards.tsx
@@ -304,6 +304,24 @@ export function ProcessingCard({ snapshot }: { snapshot: ControlSnapshot }): Rea
         </div>
       ) : null}
 
+      {status.sensorMode != null && !traits.teevolution ? (
+        <div id="sensor-mode-row" className="field-label spaced">
+          <span>Sensor sampling mode</span>
+          <select
+            id="sensor-mode"
+            value={status.sensorMode}
+            disabled={status.sensorModeEditable === false}
+            onChange={(event) => control.applySensorMode(
+              event.currentTarget.value as NonNullable<typeof status.sensorMode>,
+            )}
+          >
+            {(["Eco", "High", "Ultra"] as const).map((mode) => (
+              <option key={mode} value={mode}>{mode}</option>
+            ))}
+          </select>
+        </div>
+      ) : null}
+
       <SwitchRow
         id="motion-sync-toggle"
         label="Motion Sync"
diff --git a/src/app/cards/PerformanceCards.tsx b/src/app/cards/PerformanceCards.tsx
index 613b918e..8a45a888 100644
--- a/src/app/cards/PerformanceCards.tsx
+++ b/src/app/cards/PerformanceCards.tsx
@@ -208,6 +208,8 @@ export function SensorCard({ snapshot }: { snapshot: ControlSnapshot }): ReactNo
 
           {pair && showPair ? (
             <AsymmetricLiftOff snapshot={snapshot} />
+          ) : status.liftOffScale ? (
+            <LiftOffScale snapshot={snapshot} />
           ) : (
             <div id="lod-single">
               <Segmented
@@ -242,6 +244,51 @@ export function SensorCard({ snapshot }: { snapshot: ControlSnapshot }): ReactNo
   );
 }
 
+
+/**
+ * Lift-off for a mouse that reports a continuous range instead of the three
+ * shared stops. The slider works in raw device codes and labels them with the
+ * millimetres the driver supplies, so no scale is hard-coded here.
+ */
+function LiftOffScale({ snapshot }: { snapshot: ControlSnapshot }): ReactNode {
+  const scale = snapshot.status?.liftOffScale;
+  const [code, setCode] = useState(scale?.value ?? 0);
+
+  useEffect(() => {
+    if (scale) setCode(scale.value);
+  }, [scale?.value]);
+
+  if (!scale) return null;
+
+  const span = Math.max(1, scale.max - scale.min);
+  const millimetres = scale.minMillimetres
+    + ((code - scale.min) * (scale.maxMillimetres - scale.minMillimetres)) / span;
+
+  return (
+    <div id="lod-scale" className="lod-sliders">
+      <label>
+        Lift-off
+        <output id="lod-scale-value">{millimetres.toFixed(1)} mm</output>
+        <span className="glass-slider-rail">
+          <input
+            id="lod-scale-input"
+            type="range"
+            min={scale.min}
+            max={scale.max}
+            step={1}
+            value={code}
+            disabled={snapshot.settingsPending}
+            style={{ "--fill": `${((code - scale.min) / span) * 100}%` }}
+            onChange={(event) => setCode(Number(event.currentTarget.value))}
+            onPointerUp={() => control.applyLiftOffScale(code)}
+            onKeyUp={() => control.applyLiftOffScale(code)}
+          />
+        </span>
+      </label>
+    </div>
+  );
+}
+
 function BunnyHop({ snapshot }: { snapshot: ControlSnapshot }): ReactNode {
   const entry = snapshot.profile.entry;
   if (!snapshot.profile.bunnyHopSupported || !entry) return null;
diff --git a/src/app/cards/availability.ts b/src/app/cards/availability.ts
index 7267836b..89b73f41 100644
--- a/src/app/cards/availability.ts
+++ b/src/app/cards/availability.ts
@@ -99,6 +99,7 @@ export function cardAvailability(snapshot: ControlSnapshot): CardAvailability {
     || status.angleTuning != null
     || status.longRangeMode != null
     || status.sensorMode != null || status.performanceDuration != null
+    || status.longRangeMode != null
   );
 
   const eggs = host && traits.eggControls;
diff --git a/src/device/controller.ts b/src/device/controller.ts
index 690f427f..abb00121 100644
--- a/src/device/controller.ts
+++ b/src/device/controller.ts
@@ -54,6 +54,7 @@ import {
   isEggWeClient,
   type EggWeHidClient,
 } from "@openmouse/protocol/drivers/endgame/egg-we-control";
+import { AtkBitmouseHidClient } from "@openmouse/protocol/drivers/atk/bitmouse-hid";
 import { AtkHidClient } from "@openmouse/protocol/drivers/atk/hid";
 import { LamzuHidClient } from "@openmouse/protocol/drivers/lamzu/hid";
 import {
@@ -191,7 +192,7 @@ function activeAs<T>(...classes: ClientClass<T>[]): T | null {
   return null;
 }
 
-const DM_CLASSES = [WLMouseHidClient, LamzuHidClient, AtkHidClient, NinjutsoHidClient] as const;
+const DM_CLASSES = [WLMouseHidClient, LamzuHidClient, AtkHidClient, AtkBitmouseHidClient, NinjutsoHidClient] as const;
 const RAZER_CLASSES = [RazerHidClient, RazerViperMiniHidClient, RazerViperHidClient, RazerCobraHidClient] as const;
 const NEEDS_OPEN = [TeevolutionHidClient, VgnF2HidClient, KeychronNapeHidClient, KeychronM6HidClient, ModdoHidClient, ZaunkoenigHidClient, FantechHidClient, WallhackMouseHidClient, WallhackKeyboardHidClient, GloriousHidClient, GloriousClassicHidClient, MchoseHidClient, MchoseDockHidClient] as const;
 const PULSAR_CLASSES = [PulsarHidClient, PulsarProHidClient, PulsarXs1HidClient] as const;
@@ -200,8 +201,8 @@ const logitechClient = (): LogitechHidppClient | null => activeAs(LogitechHidppC
 const eggClient = (): EggOp1HidClient | null => activeAs(EggOp1HidClient);
 const eggWeClient = (): EggWeHidClient | null =>
   active !== null && isEggWeClient(active) ? active : null;
-const dmClient = (): WLMouseHidClient | LamzuHidClient | AtkHidClient | NinjutsoHidClient | null =>
-  activeAs<WLMouseHidClient | LamzuHidClient | AtkHidClient | NinjutsoHidClient>(...DM_CLASSES);
+const dmClient = (): WLMouseHidClient | LamzuHidClient | AtkHidClient | AtkBitmouseHidClient | NinjutsoHidClient | null =>
+  activeAs<WLMouseHidClient | LamzuHidClient | AtkHidClient | AtkBitmouseHidClient | NinjutsoHidClient>(...DM_CLASSES);
 const razerClient = (): RazerHidClient | RazerViperMiniHidClient | RazerViperHidClient | RazerCobraHidClient | null =>
   activeAs<RazerHidClient | RazerViperMiniHidClient | RazerViperHidClient | RazerCobraHidClient>(...RAZER_CLASSES);
 const viperClient = (): RazerViperV4ProHidClient | null => activeAs(RazerViperV4ProHidClient);
@@ -3330,6 +3331,51 @@ export function applyTeevolutionSensorMode(mode: NonNullable<MouseStatus["sensor
   });
 }
 
+/**
+ * Sensor sampling mode for drivers outside the Teevolution profile, where the
+ * mode is a plain device setting rather than one the polling rate can lock.
+ */
+/**
+ * Lift-off for mice that tune it continuously rather than in three stops. The
+ * value is a raw device code; the driver owns what it means in millimetres.
+ */
+export function applyLiftOffScale(code: number): void {
+  const scale = latestDeviceStatus?.liftOffScale;
+  if (!hasActiveClient() || !scale) return;
+  if (!Number.isInteger(code) || code < scale.min || code > scale.max) return;
+  const millimetres = scale.minMillimetres
+    + ((code - scale.min) * (scale.maxMillimetres - scale.minMillimetres)) / Math.max(1, scale.max - scale.min);
+  const label = `Lift-off ${millimetres.toFixed(1)} mm`;
+  stageChange({
+    key: "lift-off-scale",
+    label,
+    command: `Set lift-off to ${millimetres.toFixed(1)} mm`,
+    progress: `Setting lift-off to ${millimetres.toFixed(1)} mm…`,
+    preview: (status) => {
+      if (!status.liftOffScale) return;
+      status.liftOffScale = { ...status.liftOffScale, value: code, millimetres };
+    },
+    apply: async () => {
+      await requireClientMethod("setLiftOffScale", "lift-off distance").setLiftOffScale(code);
+    },
+  });
+}
+
+export function applySensorMode(mode: NonNullable<MouseStatus["sensorMode"]>): void {
+  if (!hasActiveClient()) return;
+  stageChange({
+    key: "sensor-mode",
+    label: `Sensor mode ${mode}`,
+    command: `Set sensor mode to ${mode}`,
+    progress: `Setting sensor mode to ${mode}…`,
+    preview: (status) => {
+      status.sensorMode = mode;
+    },
+    apply: async () => {
+      await requireClientMethod("setSensorMode", "the sensor mode").setSensorMode(mode);
+    },
+  });
+}
 export function applyTeevolutionPerformanceDuration(duration: number): void {
   if (!teevolutionClient()) return;
   const label = sleepLabel(duration * 10);
diff --git a/src/device/traits.ts b/src/device/traits.ts
index 3cff61c0..21b17a55 100644
--- a/src/device/traits.ts
+++ b/src/device/traits.ts
@@ -44,6 +44,7 @@ const BY_FAMILY: Readonly<Record<string, Partial<DriverTraits>>> = {
   "attack-shark": DIRECT_MODE,
   crdrako: DIRECT_MODE,
   atk: DIRECT_MODE,
+  "atk-bitmouse": DIRECT_MODE,
   ninjutso: { ...DIRECT_MODE, ninjutso: true },
   "keychron-nape": { advancedSection: true, sleep: true, directMode: true },
   fantech: { advancedSection: true, sleep: true, directMode: true },
diff --git a/src/supported-mice.test.ts b/src/supported-mice.test.ts
index 697ff0d4..934bd229 100644
--- a/src/supported-mice.test.ts
+++ b/src/supported-mice.test.ts
@@ -4,6 +4,7 @@ import test from "node:test";
 import { DEVICE_DRIVERS } from "@openmouse/protocol/drivers/registry";
 import { ATK_COMPX_PRODUCT_IDS } from "@openmouse/protocol/drivers/atk/products";
 import { WLMOUSE_PRODUCTS, GLORIOUS_PRODUCTS, GLORIOUS_CLASSIC_PRODUCTS } from "@openmouse/protocol/drivers/vendors";
+import { BITMOUSE_PRODUCT_IDS } from "@openmouse/protocol/bitmouse";
 import { EGG_DEVICE_PROFILES } from "@openmouse/protocol/endgame-gear-op1";
 import { KEYCHRON_NAPE_PRODUCTS } from "@openmouse/protocol/keychron";
 import { LAMZU_PRODUCTS } from "@openmouse/protocol/lamzu";
@@ -80,6 +81,7 @@ test("supported / PR / quickwin claims require a registered driver brand", () =>
 // is exempt. The moment the protocol pins those PIDs, the row is flipped to
 // "supported" and this check proves the PIDs are real.
 const PID_UNIVERSE = new Set<number>([
+  ...BITMOUSE_PRODUCT_IDS,
   ...WLMOUSE_PRODUCTS.keys(),
   ...LAMZU_PRODUCTS.keys(),
   ...LOGITECH_DIRECT_PRODUCT_IDS,
diff --git a/src/supported-mice.ts b/src/supported-mice.ts
index ba18e3ae..4c33d424 100644
--- a/src/supported-mice.ts
+++ b/src/supported-mice.ts
@@ -432,8 +432,11 @@ export const MICE: Mouse[] = [
     note: "ATK driver (0x373b) likely covers — needs hardware test" },
   { brand: "ATK", model: "VXE Mad R Major",             status: "likely",    req: 1,
     note: "ATK driver (0x373b) likely covers — needs hardware test" },
+  { brand: "ATK", model: "ZERO",                        status: "supported", req: 1,
+    pids: [0x1154, 0x1155],
+    note: "BITMOUSE driver — wired 0x1154, 8K receiver 0x1155, usagePage 0xff05. Verified on hardware: DPI, poll rate, debounce, sleep, motion sync, ripple. Lift-off not decoded" },
   { brand: "ATK", model: "VXE Zero Normal",             status: "likely",    req: 1,
-    note: "ATK driver (0x373b) likely covers — needs hardware test" },
+    note: "The 0xff02 ATK driver does not reach the ZERO family — it uses the BITMOUSE channel on 0xff05; needs its own PID confirmed on hardware" },
   { brand: "VGN", model: "Dragonfly F2 Master+",        status: "supported", req: 1,
     pids: [0xfb56, 0xfb57],
     note: "VGN F2 driver — PIDs 0xfb56/0xfb57" },
diff --git a/src/ui/device-images.ts b/src/ui/device-images.ts
index 34eb4bd1..70c27f3a 100644
--- a/src/ui/device-images.ts
+++ b/src/ui/device-images.ts
@@ -55,6 +55,9 @@ const DEVICE_IMAGES: ReadonlyMap<string, string> = new Map([
   ["373e:006a", "crdrako-ko-one.png"],
   ["373e:006b", "crdrako-ko-one.png"],
   // Attack Shark R5 Ultra wired and wireless transports share the same shell.
+  // ATK ZERO wired and its 8K receiver are the same shell.
+  ["373b:1154", "atk-zero.png"],
+  ["373b:1155", "atk-zero.png"],
   ["373e:0046", "attackshark-r5-ultra.png"],
   ["373e:0047", "attackshark-r5-ultra.png"],
   // OP1 8K, Purple Frost, and v2. XM2 models use different shells.