1W-H3-04P (K)*RFID reader | 125 kHz | Unique________________________
Product Card

* Letter K refers to a reader with a common cathode.

DREXIA Tomasz Wojtasik
Regatowa 19a
93-482 Lodz, Poland
www.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card

18-12-2018

Before use…

Please do not open the reader and do not make any changes. This results in lossof warranty.
In case of any questions please contact with us. We certainly answer to allquestions and solve possible problems.

Please carefully read the following information before connecting the reader.

Please keep in mind, that there are factors as metal surfaces, which can affect onradio communication and correct reader operation. It is advisable to consult themounting conditions before use with our staff.

Please contact with us before sending damaged products.

We offer possibility to change cable length and terminate it with a plug. Before
make an order please contact with us to determine the details.

DREXIA Tomasz Wojtasik
Regatowa 19a
93-482 Lodz, Poland
www.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card18-12-2018

General information
The RFID reader 1W-H3-04P (K) reads identification data wireless of passive transponders (cards, tags,etc.) compatible with UNIQUE standard. The built-in one-color LED for any use. The red LED cannot be
used to indicate failure or danger.
LED is powered by internal voltage regulator via built-in resistor. The light is on when the appropriate
LED is connected to the minus of power supply.

BlackRedGreenWhite––––power supply (-)
power supply (+)
red LED1-Wirecathode (anode for „K” version)

The reader should be connected according to the scheme "A". In case of necessity of simultaneous controlof LED and other devices (e.g. Buzzer) connect the reader according to the scheme "B":SCHEME ASCHEME B

DREXIA Tomasz Wojtasik
Regatowa 19a
93-482 Lodz, Poland
www.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card

18-12-2018

For product with common cathode: LED connected in series with a resistor 330R has a cathodeconnected to the negative power supply. LED is activated when is connected to plus of power supply.
To connect more than 5V, it is advised to use external resistor to avoid exceeding the maximum LED
current. Minimum value of resistor can be calculated from the formula:
Rx =where:
Rx – External resistor(𝑈𝑠−1.6𝑉)
𝐼𝑑- 330Ω

Us – Power supply voltage of LED

Id – LED current (max. 10mA)

Connect the reader according to the scheme „C”:

SCHEME C

DREXIA Tomasz Wojtasik
Regatowa 19a
93-482 Lodz, Poland
www.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card18-12-2018

DS1990A emulation
After successful parity bits check, collected data (manufacturer code and serial number) are sent via
1-Wire interface, emulating the MAXIM DS1990A
Checksum
CRC
MSB

Constant value
0x00

Manufacturer code
1 byteSerial number
4 bytescode DS1990A
0x01
LSB

1. The reader is waiting for the proximity of the token (card) trying to read it at a frequency of about 6times per second. (~ 50 ms [checking the presence of the card] + ~ 100 ms [gap between successivechecks]).
2. After the token is approached, its identifier is read (~ 120 ms) and it is stored for a period of ~ 500ms during which it is possible to emulate the read number as the MAXIM iButton DS1990A.
3. If during this ~ 500 ms on the 1-wire bus no RESET pulse initiating the transmission appears, theidentifier is forgotten and the reading is repeated. Otherwise, the time of remember the identifier will
be extended for another 500 ms from the moment of the RESET pulse.

DREXIA Tomasz Wojtasik
Regatowa 19a
93-482 Lodz, Poland
www.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card18-12-2018

External dimensions

DREXIA Tomasz WojtasikRegatowa 19a
93-482 Lodz, Poland
www.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card

18-12-2018

Technical Data
Power supply

6,5-30 V DC

Nominal power supply voltage

12 V DC

Peak current

40 mA

Receiver current

12 mA (without LED)

Red LED current

10 mA (for „K” version do not exceed 15 mA)

Frequency

125 kHzType of transponder

Manchester, 64 cycles per bit

Surface of the antenna

6,8 cm2

Reading range~4 cm

Frequency range of the reader

119-140 kHz

Nominal frequency of the reader

125 kHz

Reading frequency

6/s for identification
2/s when transponder is in range of thereader

Supported 1-Wire commands

0x33 (0x0F) - Read ROM
0xF0 - Search ROM

Mounting method

tape, glue, etc.

Cable length

0,4 m (flat cable)

The maximum length of power and signal
connections

2mReader temperature-20o C+55o CROHSYES

The device cannot be powered from the DC network. It must be connected to the power
supply via a 1A short-circuit protection.
The device marking is located on the bottom of the housing.

DREXIA Tomasz Wojtasik
Regatowa 19a
93-482 Lodz, Polandwww.drexia.pl
biuro@drexia.pl

1W-H3-04P (K)* – Product Card

18-12-2018