WAGO-I/O-SYSTEM 750 Mounting 71750-644 Bluetooth® RF-TransceiverManualVersion 2.0.0, valid from FW/HW Version 03/037.3.1 Scope of ApplicationPlease note the scope of application!• When used in the scope of application of the FCC, the magnetic base antennafrom WAGO may be used exclusively (item No.: 758-912).• When used in the scope of application of the R&TTE, any antenna with antennagain of max. 0 dBi may be used.7.3.2 Range in Open AreaThe maximum distance that can be overcome by a radio link is defined by thefollowing factors:1 Input SensitivityThis denotes the capability of the device hardware to detect the radio signaltransmitted by the remote device. The greater the sensitivity, the moreweaker signals that can be received. This is a permanent device property.2 Transmitting PowerThis denotes the signal strength which the device hardware outputs/canoutput for transmitting.The maximum transmitting power for the 750-644 I/O module can be setas a parameter. Transmitting power should be set to the highest level for themaximum range.3 Antenna GainThis factor denotes the focusing or bundling properties of the antenna. Anantenna with high antenna gain exhibits a strong alignment characteristic,i.e. depending on the antenna alignment, only highly amplified or extremelyattenuated signals can be received.That means that the reception properties can be greatly influenced bycorrect alignment. The best results are achieved when the antennas arealigned in parallel and on the same level (see also section “DeviceDescription” > ... > “Antenna”).Antenna gain of the antenna 758-921The magnetic base antenna from WAGO (item No. 758-912) itself exhibitsantenna gain of 2 dBi. Due to its cable length, the effective antenna gain is only 0dBi, thus also meeting the scope of application of the R&TTE.4 Ambient ConditionsThis factor deals with the physical environment/area around the wirelesssystem. To achieve the maximum range, a line-of-sight link should existbetween the antennas and there should be no objects present along the direct
