Specifications

-106- © MARMITEK
Transmitter Specifications
The technical specifications for the transmitters that appear in this appendix are listed
below. All transmitters are available in 868.35 MHz FM frequencies. Specifications may
be modified without prior notice.
MS845
Antenna: Built-in Whip
Power: 3.6V ½ AA Lithium Battery
Current Consumption: 30mA (transmission),
6µA (standby)
Pyroelectric Sensor: Dual Element
Maximum Coverage: 12 x 12m
Pulse Count: 1, 2, 3 or Adaptive
LED Indicator: Selectable
Adaptive Temperature Compensation
RFI Immunity: 30V/m
Operating Temperature: -10 to 60°C
Fire Protection: ABS Plastic Housing
Dimensions: 110 x 60 x 45mm
DS831/US832
Antenna: Built-in Whip
Power: 3.6V ½ AA Lithium Battery
Current Consumption: 25mA (transmission)
10µA (standby)
Loop Input Voltage Range: 0-15VDC/AC (peak
to peak)
RFI Immunity: 40V/m
Operating Temperature: 0 to 60°C
Dimensions: 65 x 30 x 25mm
SD833
Antenna: Built-in Internal Whip
Current Consumption: 30mA (transmission),
20µA (standby)
RFI Immunity: 40V/m
Power: 9V Alkaline Battery
RFI Immunity: 40V/m
Ambient temperature: 0° C to + 60° C
(operation)
Dimensions: 138 x 118 x 44mm
GB843
Antenna: Built-in Whip
Power: 3.6V ½ AA Lithium Battery
Current Consumption: 25mA (transmission)
30µA (standby)
Microphone: Omni-directional electret
Maximum Range: 6m (plate, tempered,
laminated and wired glass)
3.65m (armor-coated glass)
RFI Immunity: 20V/m
Operating Temperature: 0 to 50°C
Dimensions: 80 x 108 x 43mm
PR811
Antenna: Built-in Whip
Power: Non-replaceable battery
RFI Immunity: 40V/m
Operating Temperature: 0 to 60°C
Dimensions: 60 x 40 x 15mm
KR814
Antenna: Built-in Whip
Power: 2 x 3V Lithium Battery Size CR1225
Current Consumption: 16mA (transmission)
2µA (standby)
RFI Immunity: 40V/m
Operating Temperature: 0 to 60°C
Dimensions: 62 x 42 x 15mm
WK820
Antenna: Printed on PCB
Current Consumption: 26mA (transmission)
2µA (standby)
Power: 9V Alkaline Battery
Operating Temperature: 0 to 60°C
Dimensions: 130 x 110 x 28mm
RC840
Antenna: Printed on PCB
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