| we can supply Modular Type Frequency MetersHere are brief introduction of our company:Shanghai TBG Electric Co.,Ltd. is specialized in designing and manufacturing many kinds of high and low voltage electrical equipment, pneumatic components, and also is one of the first companies in China to export China-made high and low voltage electric.Our products successively pass through ISO9001, CE, German VDE, China Compulsory Certification, CE,CCA, TüV ,SEMKO, UL, ROHS,CB and etc.Model:TK-F45 Accuracy: Class 1.0 Voltmeter:100V 220V 380V 440V Frequency: 45-55Hz 45-65Hz 47-63Hz 57-63Hz 44-56Hz 54-66Hz 350-450Hz 450-550Hz 550-650Hz.Heat resistance: case of non-combustible plastic material. Mounting type: DIN rail. | 
