TMD Consultants 
Technology Marketing and Development Consulting Ltd
Auckland, New Zealand

Designers of very clever electronics

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Relay Boards

These relay boards are compatible with the (open-collector) outputs of all radio receivers. They are also used extensively within the alarm industry.


Single pole (SPCO) relay board. Single input, single switched output with NO and NC contacts available on screw connector. Coil is 12VDC, 400R. Contact rating DC: 3.0A, 28V (min 10mA, 5VDC). UL/CSA rating 2A, 24VDC, 1A, 120VAC. 

Dimensions: 34w x 34d x 18h


Double pole (DPCO) relay board. Single input, two switched outputs both with NO and NC contacts available on screw connectors. Coil is 12VDC, 280R. Contact rating DC: 1.25A, 24V, 30W (max current 2A), AC: 0.4A, 125VAC, 50VA. 

Dimensions: 47w x 35d x 18h


Please note that different relays can be supplied with these boards in accordance with customer requirements. Please Contact TMD for details.


TMD Consultants, 1st Floor, 15 Rawene Rd, P.O Box 34-338, Birkenhead, Auckland, New Zealand. Tel: +64 9 419-1925, Fax: +64 9 419-7984.

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Last modified: June 10, 2003