Wireless Bluetooth Module PICO-BT

The PICO-BT is a compact, battery-powered Bluetooth module developed by IMKO for wireless reading and configuration of compatible IMKO moisture sensors via the free IMKO CONNECT Android app. It connects directly to the sensor via a 7-pin MIL connector and instantly transmits real-time measurement data (moisture, conductivity, temperature) to a smartphone or tablet. The module features a power button, four status LEDs (blue = power on, white = Bluetooth connected, red = data to sensor, yellow = data from sensor), and a built-in rechargeable Ni-MH battery pack. Charging is performed using the original 12 V IMKO power supply.

Specifications

• Dimensions: 98 mm × 63 mm × 36 mm (L × W × H)

• Weight: approx. 230 g (including battery)

• Power consumption: Power-down ≈ 86 µA, Idle ≈ 20 mA, Connected ≈ 100 mA, Measuring ≈ 450 mA

• Compatible sensors: SONO M1, SONO M2, PICO64, PICO32, PICO IPH2, SONO WZ

• Storage temperature: 0 °C … 70 °C

• Operating temperature: –20 °C … 70 °C

• Charging temperature: 10 °C … 30 °C

• Charging voltage: 12 V nominal (max. 15 V, min. 12 V)

• Charging current: approx. 1 A

• Charging time: approx. 2 hours from fully discharged

• Battery: 4× Ni-MH AA, 2000 mAh → more than 1500 measurement cycles per charge

• Physical interface: RS485 / IMP-BUS protocol

• Serial settings: 8 data bits, 2 stop bits, odd parity

Main Application Areas

The PICO-BT module together with the IMKO CONNECT app is used for:

• General moisture spot checks with PICO 32, PICO 64, SONO M1 and SONO M2 sensors (single or continuous measurements of moisture, conductivity and temperature)

• Depth-profile measurements with the PICO IPH2 in access tubes (automatic storage of position, depth and inclination data)

• Fresh concrete moisture and water-cement ratio analysis with the SONO WZ probe (recipe management, density input, texture correction – coarse/normal/fine/special – and general mortar content correction)

All data can be visualised live, saved as measurement sessions, exported (CSV/PDF) and used for on-site calibration adjustments – ideal for agriculture, civil engineering, concrete quality control and scientific field campaigns where fast, cable-free data acquisition is required.