Version 1.2 ©Copyright 2016, Ambient LLC. All Rights Reserved. Page 2
1 Introduction
Thank you for your purchase of the Ambient Weather Radio Controlled Analog Wall Clock. The
following user guide provides step by step instructions for operation and troubleshooting. To
download the latest manual and additional troubleshooting tips, please visit:
http://ambientweather.wikispaces.com/rc1800wsth
2 Quick Start Guide
1. Remove locking pin before use (Figure 2).
2. Set Time Zone and Daylight Savings Time switch (Section 7).
3. Insert the battery. The hour minute and second hand will automatically adjust to 12:00:00.
4. Hang the clock on the wall.
5. Wait 24-48 hours for the correct time to set.
6. Wait 4 hours for the humidity sensor to acclimate.
3 Overview
The radio controlled wall clock (RCC) updates time and date automatically using a radio receiver
from the atomic time transmitted from Fort Collins, CO, USA (WWVB).
This signal is shortwave, and travels thousands of miles by bouncing off of the ionosphere. The signal
is best received at night when there is no solar interference.
The radio controlled clock never requires setting, and automatically adjusts to daylight savings time
(DST). This feature can be overridden for locations that do not observe DST (example, Arizona).
Features include:
Hour, minute and second hands
Automatic daylight savings time update and leap year observation
Four time zone settings (Pacific, Mountain, Central, Eastern)
Thermometer and Hygrometer
Long battery life
The radio controlled reception is attempted every two hours, and generally is successful at night. Just
one successful synchronization per day is sufficient to accurately set the clock to the second.
4 Important Notes
Before using this product, please read the following :
1. Read these instructions – All operating instructions should be read before the unit is operated.
2. Clean only with soft damp cloth.
3. Do not use near any heat sources such as radiators, heat registers, stoves, or other device
(including amplifiers) that produce heat.
4. Do not attempt to dismantle, open or repair this product yourself. If a fault occurs, seek
advice from Ambient Weather support only.
5. The product must not be exposed to substantial mechanical strain or strong vibrations.
