RAIDEN RESOURCES LIMITED — Capital/Financing Update 2005

Apr 3, 2005

ASX RELEASE

USA ECG Sales Update

The Directors of Medical Monitors Limited (ASX: MDM) are pleased to advise that Primedical International, Plc. (Primedical), the exclusive holder of license and distribution rights for Medical Monitors products and service for the USA, has increased its purchase order for ECG monitoring units (the suPER) by 100%.

The initial order of 5,000 units (contracted at USD$35 per unit) has now been increased to 10,000 units, which are to be supplied as soon as is possible. Primedical has confirmed that its USA monitoring business is ahead of budget and that it has secured contracts to supply ECG units to a number of major medical clinics. Medical Monitors will have direct benefit from the manufacturing and rovalty revenue.

Medical Monitors' technology and service model remain superior to the current market offerings in transtelephonic (telephone transfer) cardiac monitoring, and the company is well placed to take a substantial share of the lucrative US arrhythmia monitoring market estimated to be USD$550 million per annum. This technology, which allow doctors to remotely monitor the cardiovascular health of their patients, has already been granted United States Food and Drug Administration (FDA) notification to enable marketing and sales.

For further information, please contact Dr Allan Shell on (02) 9344 8100.

Medical Monitors Limited Suite 407 Westfield Eastgardens Eastgardens NSW 2036 Tel (02) 9344 8100 Fax (02) 9344 8200 Web site: www.medmon.com.au