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| style="text-align: left; background: #F6F6FB;"        | [[Image:Bw_nb.png|50px]]

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| style="text-align: left; background: #F6F6FB;"        | Please order accessories separately as they are not included into device package.

| style="text-align: left;"        | Please order accessories separately as they are not included into device package.

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! style="width: 300px; background: black; color: white;" | Accessory and its description

! style="width: 300px; color: white;" | Accessory and its description

! style="width: 500px; background: black; color: white;" | Accessory connection schematic

! style="width: 500px; color: white;" | Accessory connection schematic

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| style="text-align: left; vertical-align: top;" | Alarm buttons, door sensors, ignition, etc. have two output states: high or low. {{{model|FMB640}}} Digital inputs are used to detect these states.

| style="text-align: left; vertical-align: top;" | Alarm buttons, door sensors, ignition, etc. have two output states: high or low. {{{model|FMB640}}} Digital inputs are used to detect these states.

| style="text-align: left; vertical-align: top;" | [[Image:{{{Panic_button|FMB640_Panic_button.png}}}|400px|center]]

| style="text-align: left; vertical-align: top;" | [[Image:{{{panic_button|FMB640_Panic_button.png}}}|400px|center]]

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! style="text-align: left; vertical-align: top;" | Relays

! style="text-align: left; vertical-align: top;" | Relays

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| style="text-align: left; vertical-align: top;" rowspan=5 | {{{oneWire|One of the implemented features on {{{model|FMB640}}} is 1-Wire® data protocol, which enables connection to devices such as thermometer (DS1820, DS18S20 and DS18B20) and I-Button DS1990A. }}}

| style="text-align: left; vertical-align: top;" rowspan=5 | {{{oneWire|One of the implemented features on {{{model|FMB640}}} is 1-Wire® data protocol, which enables connection to devices such as thermometer (DS1820, DS18S20 and DS18B20) and I-Button DS1990A. }}}

| style="text-align: left; vertical-align: top;" | {{{oneWire| {{{pic_ds1820|[[Image:{{{DS1820|FMB640_DS1820.png}}}|400px|center]]}}} }}}

| style="text-align: left; vertical-align: top;" | {{{oneWire| [[Image:{{{DS1820|FMB640_DS1820.png}}}|400px|center]] }}}

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| style="text-align: left; vertical-align: top;" | {{{oneWire| TTJ sensor pinout }}}

| style="text-align: left; vertical-align: top;" | {{{oneWire| TTJ sensor pinout }}}

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| style="text-align: left; vertical-align: top;" | Here two pulse meters are used, where one is mounted on the direct flow valve and the other on the return flow valve. Data from both meters is sent to the FMB640. Then FMB640 calculates DIN3-DIN4. Resulting difference equals to fuel consumption. Filter should be used on the direct flow pipe to prevent any damage caused by impurities in the liquid. The filter mounted in the meter inlet is only a safety filter and it is too small to act as a strainer.<br/>

| style="text-align: left; vertical-align: top;" | Here two pulse meters are used, where one is mounted on the direct flow valve and the other on the return flow valve. Data from both meters is sent to the {{{model|FMB640}}}. Then {{{model|FMB640}}} calculates DIN3-DIN4. Resulting difference equals to fuel consumption. Filter should be used on the direct flow pipe to prevent any damage caused by impurities in the liquid. The filter mounted in the meter inlet is only a safety filter and it is too small to act as a strainer. Read more about impulse counters [[FMB640_Features_settings#Impulse_Counters_Settings|here]]

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| style="text-align: left; vertical-align: top;" | [[Image:{{{impulse_meter|FMB640_Impulse_meter.png}}}|400px|center]]

| style="text-align: left; vertical-align: top;" | [[Image:{{{impulse_meter|FMB640_Impulse_meter.png}}}|400px|center]]

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