diff --git a/src/device/controller.ts b/src/device/controller.ts
index 8fe6b50f..515b8a93 100644
--- a/src/device/controller.ts
+++ b/src/device/controller.ts
@@ -6178,6 +6178,17 @@ 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.
  */
+/**
+ * The height a lift-off scale code stands for. A driver whose steps are uneven
+ * lists every code's height; otherwise the two ends are interpolated.
+ */
+export function liftOffScaleMillimetres(scale: NonNullable<MouseStatus["liftOffScale"]>, code: number): number {
+  const listed = scale.millimetresByCode?.[code - scale.min];
+  if (listed !== undefined) return listed;
+  return scale.minMillimetres
+    + ((code - scale.min) * (scale.maxMillimetres - scale.minMillimetres)) / Math.max(1, scale.max - scale.min);
+}
+
 /**
  * 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.
@@ -6186,8 +6197,7 @@ 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 millimetres = liftOffScaleMillimetres(scale, code);
   const label = `Lift-off ${millimetres.toFixed(1)} mm`;
   stageChange({
     key: "lift-off-scale",
diff --git a/src/device/traits.ts b/src/device/traits.ts
index 00159e46..b0ec3c80 100644
--- a/src/device/traits.ts
+++ b/src/device/traits.ts
@@ -45,6 +45,11 @@ const BY_FAMILY: Readonly<Record<string, Partial<DriverTraits>>> = {
   vgn: SHARED_ADVANCED,
   wlmouse: DIRECT_MODE,
   lamzu: DIRECT_MODE,
+  // The Atlantis client (Lamzu Atlantis, Scyrox V8S) stores debounce and sleep
+  // in flash and publishes its own debounce ceiling (15 ms), which only the
+  // direct-mode path reads. Without the entry the sleep card still appeared
+  // through its option list, but the debounce card never did.
+  "lamzu-atlantis": DIRECT_MODE,
   lunafury: DIRECT_MODE,
   "attack-shark": DIRECT_MODE,
   bytech: DIRECT_MODE,
diff --git a/src/features/devices/cards/PerformanceCards.tsx b/src/features/devices/cards/PerformanceCards.tsx
index ec496516..2b983589 100644
--- a/src/features/devices/cards/PerformanceCards.tsx
+++ b/src/features/devices/cards/PerformanceCards.tsx
@@ -351,8 +351,7 @@ function LiftOffScale({ snapshot }: { snapshot: ControlSnapshot }): ReactNode {
   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;
+  const millimetres = control.liftOffScaleMillimetres(scale, code);
 
   return (
     <div id="lod-scale" className="lod-sliders">
diff --git a/src/features/devices/cards/availability.test.ts b/src/features/devices/cards/availability.test.ts
index 6f051a62..068c5228 100644
--- a/src/features/devices/cards/availability.test.ts
+++ b/src/features/devices/cards/availability.test.ts
@@ -402,6 +402,14 @@ test("debounce is offered only by the families that store it", () => {
   })).debounce, false);
 });
 
+test("the Atlantis family (Lamzu Atlantis, Scyrox V8S) gets debounce and sleep", () => {
+  const status = { brand: "Scyrox", ui: { family: "lamzu-atlantis" }, debounceMs: 0, sleepTimeout: 60 } as const;
+  const has = cardAvailability(snapshot({ status }));
+  assert.equal(has.debounce, true);
+  assert.equal(has.sleep, true);
+  assert.equal(traitsFor({ ...STATUS, ...status }).directMode, true, "the debounce ceiling comes from the driver");
+});
+
 test("the Hitscan family alone gives the advanced section and debounce, not sleep or signal", () => {
   // No ui flags beyond the family, so the result comes from the traits entry.
   const status = { brand: "Hitscan", ui: { family: "hitscan" }, debounceMs: 4, sleepTimeout: 60, signalStrength: 80 } as const;
diff --git a/src/features/hardware-test/supported-devices-data.ts b/src/features/hardware-test/supported-devices-data.ts
index 307933e5..c2ff6487 100644
--- a/src/features/hardware-test/supported-devices-data.ts
+++ b/src/features/hardware-test/supported-devices-data.ts
@@ -22,6 +22,7 @@ export interface SupportedDeviceEntry {
   brand: string;
   model: string;
   status: SupportedDevicesStatus;
+  /** Known product ids from the page table (hex), when the driver pins them. */
   pids?: readonly number[];
 }
 
@@ -420,6 +421,7 @@ export const SUPPORTED_DEVICES: readonly SupportedDeviceEntry[] = [
   { brand: "Angry Miao", model: "Infinity .97", status: "unknown" },
   { brand: "Dark Project", model: "Novus SE", status: "unknown" },
   { brand: "Scyrox", model: "V8", status: "unknown" },
+  { brand: "Scyrox", model: "V8S", status: "supported", pids: [0xf515, 0xf517] },
   { brand: "Mchose", model: "AX5", status: "unknown" },
   { brand: "AJAZZ", model: "AJ139 Pro", status: "unknown" },
   { brand: "AJAZZ", model: "AJ199", status: "unknown" },