Spark has announced an immediate product recall of a power back-up that has been issued to approximately 14,000 wireless landline phone customers during the past four months.
The recall followed a recent customer report that their power back-up had overheated to the point of smoke emitting from the device.
Tessa Tierney, product director, said they were not aware of any fire incidents or actual harm being caused to any customers.
"The safety of our customers is paramount, and we are therefore actioning an immediate product recall.
"Spark is therefore asking all customers who have received and installed a wireless landline kit between 22 March 2019 – 2 August 2019 to immediately disconnect the black-coloured power back-up from their white-coloured wireless landline connection box and reconnect the connection box directly to the power socket.