No.	PRODUCT	MANUFACTURER	PRICE	RATINGS	POPULARITY	LINK
1.	1byone Easy Chime Wireless Doorbell Kit, 2 Battery Operated Receiver & 1 Push Button With CD Quality Sound and 100 Meters Range	1byone	£6.99		6.6	VIEW PRODUCT
2.	Fermax Loft 3399, Universal Intercom 4 plus N surface-mounted,5-wire system	Fermax	£10.27	(from 17 reviews)	5.9	VIEW PRODUCT
3.	Eagle 6 VDC 2-Way System Intercom - White	Eagle	£20.49	(from 46 reviews)		VIEW PRODUCT