Cotech FT0203 User Manual (English)

Questions and Answers:

A
Anthony PonceJul 25, 2025
What to do if Cotech Weather Station wireless sensors are not transmitting data?
- C
  Colleen CarrollJul 25, 2025
  If your Cotech Weather Station's wireless sensors aren't transmitting data, and the display shows “--.-”, try the following: * Press and hold [ CHANNEL/+ ] for 3 seconds, then select the sensor to reconnect using [ CHANNEL/+ ] or [ HISTORY/? ], and confirm with [ MODE/SET ]. * Ensure the sensors are between 1.5 m and 30 m from the indoor unit. * Try placing the sensors higher up. * Check that the sensors’ displays are working or LED indicators are flashing every 60 seconds. * Insert new batteries into the sensors, using lithium batteries in cold climates. * Check the batteries in the indoor unit. * Ensure the radio signal isn't interfered with by metal constructions. * Move the indoor unit away from other electronic devices like routers, computers, and televisions.
M
Maria Schneider DDSJul 30, 2025
Why does my Cotech Weather Station display show precipitation when it's not raining?
- M
  michael47Jul 31, 2025
  If your Cotech Weather Station display indicates precipitation when it is not raining, ensure the rain gauge is mounted in a stable manner. If the gauge is not properly fitted (e.g. attached to an unsteady mast), the sensor can transmit incorrect values.
C
carterstephenAug 4, 2025
Why does Cotech Weather Station temperature sensor show daytime values that are too high?
- M
  michelle89Aug 4, 2025
  If your Cotech Weather Station's temperature sensor shows daytime values that are too high, ensure the thermometer/hygrometer is mounted in a location shaded from the sun. If possible, mount the sensor in a north-facing direction.
M
Mr. Larry SchmidtAug 9, 2025
What to do if Cotech FT0203 Weather Station indoor and outdoor sensors show different values?
- N
  Nicholas BautistaAug 9, 2025
  If the indoor and outdoor sensors of your Cotech Weather Station show different values, allow the sensors to stabilise for up to 1 hour. The temperature values should be within 1 °C (accuracy ±0.5 °C) and the humidity values should be within 6 % (accuracy ±3 %). Where necessary, adjust the sensors in the indoor unit (see the Calibration section).
K
Kevin BarronAug 14, 2025
How to fix poor display contrast on Cotech FT0203 Weather Station?
- T
  tjohnsonAug 15, 2025
  If the contrast of the display on your Cotech Weather Station is poor, replace the batteries in the unit.
D
David RodriguezAug 19, 2025
Why doesn't the background lighting change colour as expected on my Cotech Weather Station?

Cotech FT0203 Specifications

General

Brand	Cotech
Model	FT0203
Category	Weather Station
Humidity Resolution	1%
Power (Main Unit)	2 x AA batteries (not included)
Power (Remote Sensor)	2 x AAA batteries (not included)
Display	LCD
Indoor Temperature Range	0°C - 50°C
Temperature Resolution	0.1°C
Wireless Range	30 m
Features	Indoor/Outdoor temperature and humidity, calendar
Power Source	Battery
Humidity Range	20% - 95%