Shenzhen HAC Telecom Technology Co., Ltd.

Products

	Meter Reading Modem

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Model Number

HAC-US

ISM frequency band, ultra low transmitting power, low power consumption small size, short range and can be easily embedded in end user's product.
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Application:
HAC-US Series Ultra low power data radio module is suitable for:
Wireless meter reading
Industrial remote control and remote test
Automatic data collecting system
Building automation, security, machine-house equipment wireless monitoring
POS system
Positioning and alarm in the well
Feature:
1. Ultra low power transmission with 10mW maximal transmission power.
2. Requiring no any frequency, HAC-US transceivers work on ISM frequency band and carrier frequencies of 315MHz, 433MHz, 868MHz and 915MHz, only one available once.
3. High anti-interference and low BER (Bit error Rate)
Based on the Gaussian Frequency Shift Keying (GFSK) modulation mode, the high-efficiency forward error correction channel encoding technology is used to enhance datas' resistance to both transient and random interference and the actual bit error rate of 10-5 ~ 10-6 can be achieved when channel bit error rate is 10-2.
4. Long transmission distance
Within the visible range, when the height of antenna is higher than 2m and the bit Error Rate (BER) is 10-3, the reliable transmission distance respectively is more than 800m:1200bps, >500m :9600bps and >300m :38400bps.
5. Transparent data transmission
Transparent data interface used in transceiver is for meeting many standard or nonstandard user protocols. Any false data generated in air can be filtrated automatically (What has been received is exactly what has been transmitted).
6. Multi-channel
HAC-US transceivers offer Multi-channels in one ISM frequency band satisfying various configuration of communication under users' demand at the same time and avoiding the interference by other devices in the same locale. (Channels setting is set via serial port's order, please see the concrete method in Page6)
7. 3 serial ports with 3 connection methods
HAC-US provides 3 serial ports and 3 connection methods, with COM1 as the TTL level UART interface, COM2 as the nonstandard RS-232 port and Com3 as the nonstandard RS-485 port (using software analogy as the logic of RS232 and RS485, the level of COM 2 is -0.7~5.7V having the same use method with the standard RS232/485 and the efficient drive distance is 2m.)
Note: when the baud rate is more than 9600bps, only TTL interface available.
8. Large data buffer zone
The interface data rate is same with the RF baud rate: 1200, 2400, 4800, 9600, 19200, 38400bps, and 56700bps need customized. With format of 8N1/8E1/8O1, users can define by themselves. HAC-US can transmit unlimited long data frames supporting flexible programming.
9. Intelligent data control requiring no any complicated transmission programs
Even for half duplex communication, no any excessive programs required. All RF system data transmission/reception and other On-the-Fly conversion and control are performed by HAC-US transceivers automatically.
10. Low power consumption & sleep function
The receiving current is <25mA, the transmitting current is <40mA, and the sleeping current is <25uA.
11. High reliability, light and small
By using monolithic radio-frequency integrated circuit and single-chip MCU, the transceivers have little peripheral circuits, high reliability, and low failure rate.
12. More options of configurable antennas for user different applications.
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Parameters:
Modulation mode: GFSK (Gaussian Frequency Shift Keying)
Working frequency: 433 MHz （default） 315MHz, 868 MHz, 915 MHz customized
Transmission power: 10dBm
Interface data format: 8E1/8N1/8O1
Receiving sensitivity: -110dBm:1200bps
Interface baud rate: 1200、2400、4800、9600、19200、38400bps Optional 57600bps customized
Working temperature: -30°C~70°C
Power supply: +3.3 ~ 5.5VDC
Dimension: 31.8mm*19.2mm*6.8mm
Transmitting current: ≤40mA
Receiving current: ≤25mA
Sleeping current: ≤25uA
Working humidity: 10%~90% relative humidity without condensation