diff --git a/README.md b/README.md
index 1d91d0b..297c77a 100644
--- a/README.md
+++ b/README.md
@@ -10,17 +10,19 @@ TODO: image of result
 
 A microcontroller is powered from a 5V brick (always connected). It controls a set of relays, which in turn enable power to individual power sockets. Upon boot the microcontroller waits a few seconds before enabling each of the power sockets. Then it sits idly by until the next power outage. All of this is enclosed in an electrical distribution box.
 
+Optionally a speaker is used to indicate the state of the power socket "boot" process. A circuit breaker may be added to guard the whole device from tripping the main circuit breaker in the building.
+
 ## Bill of Materials
-- microcontroller (Arduino)
-- multi-relay module
-- 5V power brick
-- electrical distribution box
-- power sockets modules for the distribution box
-- corded power plug
+- microcontroller (MCU, Arduino)
+- multi-relay module board
+- 5V power brick (to power the MCU and relays)
+- socket for the power brick
+- electrical distribution box (safe housing for the whole device)
+- power socket modules suitable for the distribution box
+- corded power plug (for connecting the whole device to electricity)
 - cables suitable for electrical wiring
 - speaker (optional)
-- circuit breaker (optional)
+- circuit breaker module (optional)
 
 TODO: image of internals
 
-
diff --git a/code.ino b/code.ino
index fde2cb4..39fb25f 100644
--- a/code.ino
+++ b/code.ino
@@ -1,6 +1,6 @@
-#define LOW_POWER_SLEEP
+#define LOW_POWER_SLEEP // dependency: Adafruit SleepyDog
 
-#define SLOW_START_DELAY 1000 // ms
+#define SLOW_START_DELAY 5000 // ms
 #define PIN_SPEAKER 12
 
 #define RELAYS 8
@@ -37,8 +37,9 @@ void setup() {
 
   for (int i = 0; i < RELAYS; i++) {
     Serial.println("...");
+    delay(SLOW_START_DELAY/2);
     beep(100, 10);
-    delay(SLOW_START_DELAY);
+    delay(SLOW_START_DELAY/2);
     
     Serial.print("Starting ");
     Serial.print(i+1);
@@ -56,7 +57,7 @@ void setup() {
   delay(1000);
   beep(210, 100);
   beep(420, 100);
-  beep(560, 200);
+  beep(560, 500);
   digitalWrite(LED_BUILTIN, LOW);
   delay(1000);
 }