–

–

–

–

10

11

VCC

GND

B1

BATHLD-001-THM

VCC

S0

S1

S2

S3

S4

S5

S6

S7

LED0

GND

ACK_OUT

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

J1

RESET

1

VDD

2

GND

3

C0

4

C1

5

NC

6

J2

RESET

C1

C0

GND

VCC

CD_OUT

CD_IN

VCC

GND

PAIR

1

2

3

4

5

J3

R6

10k

VCC

ANT1

ANT-fff-PW-LP

S0

S1

S2

S3

GND

GND

C2

0.1uF

GND

VCC

S1

PAIR

CD_OUT

CD_IN

R1

200

R2

200

D1

Blue

GND

VCC

21

GND

18

RESET

22

LNA_EN

23

PA_EN

24

CMD_DATA_OUT

26

CMD_DATA_IN

27

ACK_EN

28

PAIR

29

GND

25

ANT

19

S3

5

S2

6

S1

7

S0

8

C0

10

C1

11

POWER_DOWN

12

LATCH_EN

13

GND

9

TR1

HUM-fff-PRC-CAS

VCC

VCC

GND

VCC

GND

RESET

C1

C0

R7 10k

R8 10k

R9 10k

VCC

GND

VCC

R11

10k

GND

Figure 11: OTX-868-HH-LR8-PRC Schematic Diagram

The commands from the handheld transmitter can be received by a

command and accepts a Remote Confirm command.

Remote Activation

The transmission output consists of six bytes:

0x03 0x00 0x00 0x00 0x10 <STATUS>

The first byte is 0x03 with the next three bytes 0x00. Byte five is 0x10

which indicates a Remote Activation. Byte six is the STATUS byte, which is

a bit map of the button states. Bit 0 corresponds to button S0 and so forth.

Each bit is 1 if the corresponding line is high. The external microcontroller

transmission and know which transmitter sent the command. It can then

take whatever action is required by the STATUS bits. Additional information

Transceiver data guide.

Remote Confirm

The handheld transmitter accepts a Remote Confirm command over the

air to control the LED in the membrane switch. This command has the

following format:

0x00 0x11 <DURATION> <ALIVE>

The first two bytes are 0x00 0x11 and indicate that the packet is a remote

confirm packet.

The DURATION byte indicates the amount of time that the LED should be

held high. This value is multiplied by 10ms. If the value is 0, the LED output

is immediately taken low.

The ALIVE byte indicates how long after the transmission the module

should stay awake in receive mode. This value is multiplied by 0.1s. Once

this duration expires, the module returns to sleep mode.

This message is transmitted to the handheld transmitter’s address. It

must be received by the handheld transmitter within one second of initial

transmission or within the ALIVE interval of the previous Remote Confirm

message.

Transmitter Schematic