Narrow rang thermometer by Teo Sok Ping. 2. Paging system by Oh Yik Ming. 3. Pump failure cum water level detector by Choong Yoon Meng. 4. Soldering iron controler by Ding Lian Onn. 5. Tele-visage by Foh Loe Sieun. - TEO SOK PING (INTI College Malaysia, 1998)