Mini Data Rx/Tx Pair

Ultra-low cost data RF transmitter & receiver modules. For short range, low data rate communication.

Applications
Keyless Entry & Alarm System	Home & Personal Security System
Short range data link	Wireless Door and Gate Control
Remote Meter Reading System	Data Transmission

View specification sheet (.pdf - 204kb)

Data Transmitter

The RF module frequency is fixed at 433.92 Mhz by the use of a quartz Surface Acoustic Wave (SAW) device. Simply connect an antenna, connect power and feed in data. Thats it.

Can be used with Holtek HT12E encoders or similar.

TWS-433 complies with Radiocommunications (Low Interference Potential Devices) Class Licence

Transmitter pinout
Pin-out with SAW
facing front

Pin 1: Vcc
Pin 2: Vcc
Pin 3: GND
Pin 4: GND
Pin 5: RF Output
Pin 6: Code Input

RF Output Power: 8mW

Transmitter Specifications
Symbol	Characteristic	Conditions	Min.	Typ.	Max.	Unit
V_cc	Operating Supply Voltage		1.5	-	12	V
I_cc	Peak Current		-	5	9	mA
V_ih	Input High Voltage	I_data=100µA (high)	V_cc-0.5	-	V_cc	V
V_il	Input Low Voltage	I_data=0µA (low)	-	-	0.3	V
P_out	RF power out into 50ohm		-3	0	+2	dBm
T_bw	Modulation Bandwidth	External Encoding	-	5	-	kHz
T_r	Modulation Rise Time		-	-	100	µS
T_f	Modulation Fall Time		-	-	100	µS
	Range			20		m

NOTE:
Some countries limit importation or require an import license for radio equipment. It is not possible or reasonable for Computronics or its employees to be aware of any restrictions or regulations on importing items to any country or region. It is solely the buyers responsibility and cost to ensure items are able to be imported into their selected destination country. All items are despatched at the buyers risk.

Order Code	1+	10+
TWS-433 433.92 MHz transmitter	A$ 4.00	A$ 3.90
TWS-303 303.875 MHz transmitter	A$ 4.00	A$ 3.90
TWS-315 315 MHz transmitter	A$ 4.00	A$ 3.90
TWS-418 418 MHz transmitter	A$ 4.00	A$ 3.90

Prices do not include GST. 10% GST applies to goods delivered in Australia.
Australian GST is not paid on shipments despatched to an international destination.
Prices are in Australian Dollars and subject to change without notice.
Sales are subject to Computronics General Terms and Conditions of Sale
E. & O.E.

Data Receiver

The RF module frequency is from 300MHz to 434 MHz. Its high sensitivity passive design is simple to use with a low external parts count. An ASK data shaping comparator is included.
Can be used with the Holtek HT12D decoder or similar.

Pin-out with tuning lug facing front
(not as shown in photo)

Pin 1: GND
Pin 2: Digital Output
Pin 3: Linear Output
Pin 4: Vcc
Pin 5: Vcc
Pin 6: GND
Pin 7: GND
Pin 8: Antenna (~30-35cm)

Sensitivity: 3uVrms

Receiver Specifications
Symbol	Characteristic	Conditions	Min.	Typ.	Max.	Unit
V_cc	Operating Supply Voltage		4.9	5	5.1	V
I_tot	Operating Current			4.5		mA
V_data	Data Out	I_data=+200µA (high)	V_cc-0.5	-	V_cc	V
V_data	Data Out	I_data=-10µA (low)	-	-	0.3	V
F_c	Operating Radio Frequency		300		434	MHz
P_ref	Sensitivity				-106	dBm
	Channel Width		±500			kHz
NEB	Noise Equivalent Bandwidth		-	5	4	kHz
	Baseboard Data Rate				3	kb/s
	Receiver turn-on time		-	-	5	mS

Order Code	1+	10+	View Cart
RWS-315 315 MHz receiver	A$ 4.00	A$ 3.90

Due to continuing product improvement efforts, specifications and appearance are subject to change without notice.

Mains powered equipment supplied by Computronics operates from 240Vac, 50Hz supply unless otherwise specified.

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