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BT004BLE - 4 relay outputs at 16A

Technical Documentation

Overview

The BT004BLE provides four volt free contact relay outputs with a current rating of up to 16Amp each

controlled over a HM10 Bluetooth serial port. The module is powered from a 12vdc supply which can be

regulated or unregulated. The DC input jack is 2.1mm with positive core polarity, DC supplies are required

to supply at least 500mA at 12vdc. The relays are SPCO (Single Pole Change Over) types. The normally

open, normally closed and common pins are all available on the screw terminals.

LED Indication

The BT004BLE provides a red LED mounted immediately next to each relay to indicate whether it is in a

powered state (LED on), there are also two LED's near the power connector, one indicates power and the

other will flash when the board is waiting for a connection and remain lit when a connection is present.

Module name and password

By default the module name will be "BT004BLE" and the password will be "password" These can be

changed by using our android or IOS applications "IO BluetoothLE" which can be downloaded from Google

play or iTunes. If you forget the password there is a factory reset that will change both the name and

password back to the default setting.

Factory Reset

If you forget your password and are unable to control the device, then you can perform a factory reset to

change the modules name and password back to the default of "BT004BLE" and "password". To do this first

power the module down completely. Next connect together the top 2 contacts (nearest the relays) of the 5

holes next to the dc power connector and apply power. Keep these pins shorted until the red power LED

starts blinking. Once the power LED stays on constantly the module is ready to use at its default settings.

Connections

16A VFC (Volt Free Contacts)

NC = normally connected, C = common, NO = normally open

12v dc 2.1mm jack

(+ve core)

Summary of content (4 pages)

PAGE 1
BT004BLE - 4 relay outputs at 16A Technical Documentation Overview The BT004BLE provides four volt free contact relay outputs with a current rating of up to 16Amp each controlled over a HM10 Bluetooth serial port. The module is powered from a 12vdc supply which can be regulated or unregulated. The DC input jack is 2.1mm with positive core polarity, DC supplies are required to supply at least 500mA at 12vdc. The relays are SPCO (Single Pole Change Over) types.
PAGE 2
Power relays Four 16A volt free contact relays are provided for switching a common input between a normally closed output and a normally open output. The relay coil is powered by the 12vdc incoming supply on user command. Coil C Relay in passive state NC Coil NO C Relay in powered state NC NO Relay Power Rating If the contact load voltage and current of the relay are in the region enclosed by the solid and dotted lines in the figure below, the relay can perform stable switching operation.
PAGE 3
Binary command set Commands are sent to the BT004BLE using its HM10 Bluetooth serial port. Command Description Dec Hex 16 10 Get Module Info, returns 3 bytes. Module ID (27 for BT004BLE), Hardware version, Firmware version.
PAGE 4
ASCII Command Set All ASCII Commands begin with a colon (":") with any data needed separated by commas (",") and end with a carriage return ("\r"). Command Description Enter Password (PWD) ":PWD,password\r" Send the password to the BT004BLE, the password must be sent before you can control the board. Returns "OK\r" for success and "NAK\r" Get Module Info (GMI) ":GMI\r" returns a string with the module ID, software version and hardware version separated by commas and ending with a carriage return e.g.