Specificaties LI-433TR

Specifications

Specifications:

Parameter	Value	Units
Frequency	433.92 / 434.33	MHz
Modulation	FSK	-
Frequency deviation	+/- 15	kHz
RF output power	-10	dBm
Sensitivity, BR=20kBit/s, BER<10-3	-100	dB
Maximum bit rate	20	kbit/s
Supply voltage VDD	2.7-5.25	V
Receive supply current	11	mA
Transmit supply current	8	mA
Standby supply current	8	mA
Logic ‘1’ input voltage limits	0.7*VDD ... VDD	V
Logic ‘0’ input voltage limits	0.3*VDD ... 0	V
Logic ‘1’ input current (Vin=VDD)	20	mA
Logic ‘0’ input current (Vin=0V)	-20	mA
Operating temperature range	-10…+40	oC
Storage temperature range	-30…+80	oC

The LI-433TR complies with ETSI EN 300 220-1 V1.2.1.

The connections on the 10-pin header are:

Pin number	Name	Function
1	TXEN	Transmitter enable Transmit mode TXEN = ‘1’ Receive mode TXEN=’0’
2	Power up	Active / standby Active Power up=’1’ Standby Power up=’0’
3	GND	Power ground (0V)
4	CS	Channel Select 433.92 MHz (channel 1) CS=’0’ 434.33 MHz (channel 2) CS=’1’
5	GND	Power ground (0V)
6	Din	Data in
7	GND	Power ground (0V)
8	Dout	Data out
9	GND	Power ground (0V)
10	VDD	Power supply voltage

Timing diagrams:

Wait for 1 ms after switching from receiving to transmitting, before sending data.

After switching from standby to transmitting, allow a delay of 1 ms. It takes 2 ms before data can be transmitted.

After power-up, the module must be kept in receive mode for 3 ms minimally.

After switching from transmitting to receiving it takes 3 ms before data can be received.

After switching from standby to receiving, it takes 3 ms before data can be received.

The mechanical properties are shown below: