User manual

4 © MARMITEK
BATTERY REPLACEMENT (RC840)
When the battery is low, the RC840’s LED flashes during transmission.
To replace the battery:
1. Remove the battery cover located at the rear of the unit. To do so, press
the release tab using a small screwdriver and lift the cover away from the
RC840’s plastic housing.
2. Observing correct polarity, replace the battery (9V, alkaline).
3. Replace the battery cover making sure that it clicks shut.
TECHNICAL DATA
WK820
Antenna: Printed on PCB
Frequency: 868.35MHz FM
Current Consumption: 26mA (transmission)
2μA (standby)
Power: 9V Alkaline Battery
RFI Immunity: 40V/m
Operating Temperature: 0 to 60°C
Dimensions: 130 x 110 x 28mm
RC840
Antenna: Printed on PCB
Frequency: 868.35MHz FM
Current Consumption: 25mA (transmission)
3μA (standby)
Power: 9V Alkaline Battery
RFI Immunity: 40V/m
Operating Temperature: 0 to 60°C
Dimensions: 128 x 49 x 27mm
Specifications may be modified without prior notice.
Environmental Information for Customers in the European Union
European Directive 2002/96/EC requires that the equipment bearing this symbol
on the product and/or its packaging must not be disposed of with unsorted
municipal waste. The symbol indicates that this product should be disposed of
separately from regular household waste streams. It is your responsibility to
dispose of this and other electric and electronic equipment via designated
collection facilities appointed by the government or local authorities. Correct disposal and
recycling will help prevent potential negative consequences to the environment and human
health. For more detailed information about the disposal of your old equipment, please contact
your local authorities, waste disposal service, or the shop where you purchased the product.
Figure B.16: RC840
(battery cover off)
9V Alkaline
Battery