diff --git a/cmd/server/web/css/style.css b/cmd/server/web/css/style.css
index 961b1d4..bcbc77c 100644
--- a/cmd/server/web/css/style.css
+++ b/cmd/server/web/css/style.css
@@ -196,3 +196,78 @@ h1 {
         font-size: 15px;
     }
 }
+
+.accordion-header {
+    cursor: pointer;
+    user-select: none;
+}
+
+.accordion-header:hover {
+    opacity: 0.7;
+}
+
+.accordion-body {
+    max-height: 520px;
+    overflow: hidden;
+    transition: max-height 0.3s ease;
+}
+
+.accordion-body.collapsed {
+    max-height: 0;
+}
+
+.progress-with-signal {
+    display: flex;
+    align-items: center;
+    gap: 0;
+}
+
+.progress-90 {
+    flex: 0 0 86%;
+    margin-right: 10px;
+}
+
+/* ===== SIGNAL ICON ===== */
+.signal-icon {
+    display: flex;
+    align-items: flex-end;
+    gap: 4px;
+    width: 34px;
+    height: 34px;
+    flex-shrink: 0;
+}
+
+.sig-bar {
+    flex: 1;
+    border-radius: 2px;
+    min-width: 5px;
+    border: 1.5px solid #00ff88;
+    background-color: transparent;
+    transition: background-color 0.3s, border-color 0.3s;
+}
+
+.sig-bar-1 { height: 25%; }
+.sig-bar-2 { height: 50%; }
+.sig-bar-3 { height: 75%; }
+.sig-bar-4 { height: 100%; }
+
+/* Активные — зелёная заливка */
+.sig-bar.active-1,
+.sig-bar.active-2,
+.sig-bar.active-3,
+.sig-bar.active-4 {
+    background-color: #00ff88;
+    border-color: #00ff88;
+}
+
+/* Неактивные — прозрачные, только контур */
+.sig-bar.dim {
+    background-color: transparent;
+    border-color: #1a3a1a;
+}
+
+#last-byte {
+    font-size: 18px;
+    font-weight: bold;
+    color: #00ff88;
+}
\ No newline at end of file
diff --git a/cmd/server/web/dashboard.html b/cmd/server/web/dashboard.html
index 7c361f7..e1affb7 100644
--- a/cmd/server/web/dashboard.html
+++ b/cmd/server/web/dashboard.html
@@ -21,19 +21,21 @@
         <div id="meta"></div>
     </div>
 
-    <div class="card">
-        <h3>ПОСЛЕДНИЙ СИГНАЛ</h3>
-        <div id="latest">--</div>
-        <div id="bits"></div>
-    </div>
-
     <div class="card wide">
         <h3>УРОВНИ КАНАЛОВ</h3>
 
         <div class="progress-row">
-            <div class="progress-label">Канал 1</div>
-            <div class="progress">
-                <div class="fill" id="bar1"></div>
+            <div class="progress-label">Канал 1 — <span id="last-byte">0</span></div>
+            <div class="progress-with-signal">
+                <div class="progress progress-90">
+                    <div class="fill" id="bar1"></div>
+                </div>
+                <div class="signal-icon" id="signal-icon" aria-label="Уровень сигнала" role="img">
+                    <div class="sig-bar sig-bar-1"></div>
+                    <div class="sig-bar sig-bar-2"></div>
+                    <div class="sig-bar sig-bar-3"></div>
+                    <div class="sig-bar sig-bar-4"></div>
+                </div>
             </div>
         </div>
 
@@ -53,8 +55,10 @@
     </div>
 
     <div class="card wide">
-        <h3>ПОТОК ДАННЫХ (последние 32)</h3>
-        <div id="history"></div>
+        <h3 class="accordion-header" id="history-header">▶ ПРИНЯТЫЕ ДАННЫЕ</h3>
+        <div class="accordion-body" id="history-body">
+            <div id="history"></div>
+        </div>
     </div>
 
 </div>
diff --git a/cmd/server/web/js/app.js b/cmd/server/web/js/app.js
index c82f79c..41fa28b 100644
--- a/cmd/server/web/js/app.js
+++ b/cmd/server/web/js/app.js
@@ -1,19 +1,14 @@
-// ===== BIT RENDER =====
-function renderBits(byte) {
-    const bits = document.getElementById("bits");
-    bits.innerHTML = "";
+// ===== ACCORDION =====
+const historyHeader = document.getElementById("history-header");
+const historyBody = document.getElementById("history-body");
+let accordionOpen = false;
+historyBody.classList.add("collapsed"); // изначально свёрнут
 
-    byte = Number(byte || 0);
-
-    for (let i = 7; i >= 0; i--) {
-        const v = (byte >> i) & 1;
-
-        const d = document.createElement("div");
-        d.className = "bit" + (v ? " on" : "");
-        d.textContent = v;
-        bits.appendChild(d);
-    }
-}
+historyHeader.addEventListener("click", () => {
+    accordionOpen = !accordionOpen;
+    historyHeader.textContent = (accordionOpen ? "▼" : "▶") + " ПРИНЯТЫЕ ДАННЫЕ";
+    historyBody.classList.toggle("collapsed", !accordionOpen);
+});
 
 // ===== PROGRESS BAR =====
 function setBar(id, value) {
@@ -21,6 +16,31 @@ function setBar(id, value) {
     document.getElementById(id).style.width = value + "%";
 }
 
+// ===== SIGNAL ICON =====
+function setSignal(percent) {
+    const bars = document.querySelectorAll(".sig-bar");
+    bars.forEach(b => {
+        b.classList.remove("active-1", "active-2", "active-3", "active-4");
+        b.classList.add("dim");
+    });
+
+    if (percent > 75) {
+        bars[0].classList.add("active-1"); bars[0].classList.remove("dim");
+        bars[1].classList.add("active-2"); bars[1].classList.remove("dim");
+        bars[2].classList.add("active-3"); bars[2].classList.remove("dim");
+        bars[3].classList.add("active-4"); bars[3].classList.remove("dim");
+    } else if (percent > 50) {
+        bars[0].classList.add("active-1"); bars[0].classList.remove("dim");
+        bars[1].classList.add("active-2"); bars[1].classList.remove("dim");
+        bars[2].classList.add("active-3"); bars[2].classList.remove("dim");
+    } else if (percent > 25) {
+        bars[0].classList.add("active-1"); bars[0].classList.remove("dim");
+        bars[1].classList.add("active-2"); bars[1].classList.remove("dim");
+    } else if (percent > 0) {
+        bars[0].classList.add("active-1"); bars[0].classList.remove("dim");
+    }
+}
+
 // ===== SMOOTHING =====
 let lastValue = 0;
 
@@ -60,12 +80,6 @@ async function update() {
         document.getElementById("meta").textContent =
             "аптайм: " + uptime + "s | буфер: " + filled;
 
-        // ===== LATEST =====
-        const latest = Number(h.latest || 0);
-        document.getElementById("latest").textContent = latest;
-
-        renderBits(latest);
-
         // ===== HISTORY =====
         const arr = Array.isArray(hist.bytes) ? hist.bytes : [];
 
@@ -89,6 +103,8 @@ async function update() {
 
         // ===== ONLY CHANNEL 1 =====
         setBar("bar1", smooth);
+        document.getElementById("last-byte").textContent = filtered;
+        setSignal(smooth);
 
     } catch (e) {
         console.error("UPDATE ERROR:", e);
@@ -96,6 +112,5 @@ async function update() {
     }
 }
 
-// быстрее и плавнее
 setInterval(update, 500);
-update();
+update();
\ No newline at end of file