RF signal repeater for indoor data logger networks

HD35RE

RF signal repeater for indoor wireless data logging, extending communication between HD35AP base units and HD35ED data loggers, with external whip antenna, RF status LEDs, PING button and rechargeable battery.

Introduction

Indoor wireless networks can lose range when rooms, distance or reinforced concrete walls sit between the logger and the base unit. This RF signal repeater bridges the HD35AP base unit and HD35ED data loggers, helping extend communication coverage without adding signal cables.
 
The device is designed for indoor use and uses an external whip antenna for RF transmission. Open-field range reaches 300 m or 180 m towards devices with internal antenna, depending on frequency band, and >500 m towards devices with external antenna. Several repeaters can be used in cascade to increase the distance further where the installation requires it.
 
Commissioning and service are practical on site. RF LEDs show whether data transmission was successful or failed, while the front PING button checks whether the base unit can be reached. Power is supplied by a rechargeable 2250 mA/h lithium-ion battery, an optional 6 Vdc adapter or a PC USB port.

Extended coverage
Increase logger-to-base distance, with >500 m open-field range to devices with external antenna.
Indoor network fit
ABS housing and wall support suit removable indoor installation.
RF confidence
RF LEDs and PING button help check transmission status and base-unit reachability.
Power flexibility
Use a 2250 mA/h rechargeable battery, optional 6 Vdc adapter or PC USB power.

Features

Repeater function

The device acts as a bridge between the HD35AP base unit and HD35ED data loggers to increase wireless communication distance.

RF frequency versions

Models are available for 868 MHz, 902-928 MHz or 915.9-929.7 MHz systems, depending on the selected version.

External antenna

The fixed whip antenna supports RF transmission in the selected frequency band.

Status indication

LEDs indicate external power presence, battery charge level and RF communication status.

Connection button

The front push-button connects or disconnects the repeater from the wireless network and supports the PING function for RF checks.

USB service port

The mini-USB connector is used for configuration and firmware update, not for data download.

Installation

The housing supports removable wall mounting with the supplied wall support or fixed installation with optional flanges.