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

Designers of very clever electronics

Home  Products  Services  Projects  References  Directors  Contact  


Wireless Transmitters

A full range of 433.92MHz transmitters and receivers are available. These devices are all based on high performance FM (Frequency Modulation) data transmission and utilise Keeloq (TM) rolling code technology for high data integrity (4.2 billion codes). They have been designed for high quality, low cost applications which demand exceptional radio performance. 

M842 (2-button) and M844 (4-button) mini transmitters. 

Attractive, ergonomically designed transmitters with concave silicone soft touch push-buttons which are easy to operate yet resist accidental operation. The unit is supplied with a clever wall mounting bracket and key ring attachment (not shown). The silicon membrane and ultrasonically welded case make the transmitted rugged and splash resistant. Operates from 2 x CR2025 3V button cells. Performance is excellent with operating ranges typically 50-100m. 

M832 (2-button) and M834 (4-button) remotes.

Standard sized transmitters with easy-operate big button for main channel and recessed small button for secondary channel. Operates from 1 x 4LR44 (6V) battery. Comes with wall mounting holster and visor clip

M840 wireless keypad.

A rugged, wireless battery operated four channel keypad with transmission being controlled by user-entered PIN numbers. Many features including: weatherproof construction designed for outdoor use, multiple PIN numbers (5), temporary PINs (valid for specified number of days or usages), backlighting, audible feedback, tamper lockout, low battery indicator, free-access mode and many more. Operates from 4 x AAA cells which typically provide 2-3 years life under normal use. Operating range typically 50-100m. 

M128 Wireless Wall Control Switch.

A wireless wall control switch, designed for interior use. The M128 is a transmitter which has two buttons (channels) and when mounted on the wall as a permanent fixture, it looks like a permanently wired switch. It can then control any standard receiver as well as the Wireless WallSwitch (WWS) receiver allowing it to be used for the remote control of mains-rated loads.

For more information on these products, please Contact TMD



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.

Send mail to with questions or comments about this web site.
Last modified: June 10, 2003