doc: add a warning to TeleLaunch docs about siren volume levels

diff --git a/doc/telelaunch-operation.inc b/doc/telelaunch-operation.inc
index db71d91869bc6c1360355663b8d3b657b5709944..edc6bfc14a3566569509bc88e7eec38cbfeb4cfa 100644 (file)
--- a/doc/telelaunch-operation.inc
+++ b/doc/telelaunch-operation.inc
@@ -6,6 +6,12 @@
        unit, which early customers (before this manual was even written)
        reported were sufficient to successfully use the system.
 
+       [WARNING]
+       The siren used on TeleFire boxes is intended to be heard at a distance
+       outdoors.  We strongly recommend that you do NOT test the system on
+       your kitchen counter when your significant other has a cup of hot
+       coffee in hand nearby!
+
        The remainder of this section assumes the system has already been
        properly configured with callsign, AES key, and bank numbers for each
        TeleFire box.