a)Transmission sensors for option:reed switch,hall effect,optical switch. b)Installed in vertical pipeline and is suitable for household as branch meter and easy for installation. c)Selected high quality materials for stready & reliable characterisitic and good looking. d)Magnet-proof and a signal will be transmitted when 10 or 100 liters water passing. e)Pointer or numeric register,dry dial or liquid sealed,iron or brass body,cold or hot water meter for option. NOTE:Technical data conform to ISO4064.