BD118
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Catalog excerpts

BD118 - 1

Bi-directional RF Remote Control application boards These simple application boards use firmware based on the familiar CTA88 remote control systems to implement a bidirectional control link. A system consists of a master board (which initiates communication burst cycles) and a slave (which responds to them). In hardware terms these boards are the same, but have different firmware loaded. Figure 1: BD118 application boards A single relay output is provided on each board, controlled by a logic (or switch) input on the "opposite" board. This product only operates in one mode: the radio link operates continuously, and the output simply reflects the state of the input ("momentary" operation). The radio link uses a 10% duty cycle, 0.3 second burst cycle. The data format employed has an 8 bit address, which is set up on a DIP switch. LED indicators are provided for power, relay output state and "valid communication link established". (On the "master" this LED is lit constantly if the link is functional. On the "slave" board this LED blinks on with each burst received from the master) 8 bit address select switch A relay to control mains powered devices rated up to 8A, 240VAC Visual LED indication of power, valid code received and active relay RF module range testing Logic or Switch input for momentary control of relay Momentary relay output Setup is simple as Plug-and-Play Kit Contents The BD118 Application kit is supplied with the following contents: 1 1 2 2 1 1 BD188 Encoder/Decoder Master board BD188 Encoder/Decoder Slave board Radiometrix Transceiver module (ordered separately) 1/4-wavelength monopole or helical antennas BD118 Application board manual Data sheet of Radio module ordered Additional requirement  External power supply (24V, 12V and 5V version available)

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BD118 - 2

Features: Interfaces Output Input 8amp 240v rated SPDT "change over" relay 3.81mm pitch 3 way 2 part "Phoenix" type terminal Active low logic input Pullup to 5v, and protection diodes, provided Compatible with N/O volt-free closing contact 3.81mm pitch 2 way 2 part "Phoenix" type terminal 24v, 12v and 5v versions available 40mA max (plus relay coil current) 3.81mm pitch 2 way 2 part "Phoenix" type terminal SMA (or optional terminal block) Indicators Power on LED Relay state LED Valid Comms. LED BD118 control chip Clock Data rate Addressing Response time 10MHz (ceramic resonator) 3.6kbps...

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BD118 - 3

Figure 2: BD118 Board Component Layout

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BD118 - 5

Radiometrix Ltd Hartcran House 231 Kenton Lane Harrow, Middlesex HA3 8RP ENGLAND Tel: +44 (0) 20 8909 9595 Fax: +44 (0) 20 8909 2233 sales@radiometrix.com www.radiometrix.com Copyright notice This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in whole or in part must give clear acknowledgement to the copyright owner. Limitation of liability The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd reserves the right to make changes or improvements in the design, specification or manufacture of...

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