American HAMLIN MARR 1 reed magnetic reed switch magnetic reed switch sensor

Reed principle:

The dry reed pipe is referred to as the dry tongue reed pipe, a contact passive electronic switch element, has simple structure, urine volume in control, and other advantages, its shell is generally a sealed glass tube and pipe is equipped with two iron elastic reed panels, filling inert gas with a metal rhodium. Usually, the glass tube two is made of special material is separated from the reed. When the magnetic material near the glass tube, in under the action of the magnetic field lines, two reeds of the inner pipe is magnetized contact to attract each other, reed will pull together, nodes are connected to the circuit connectivity. External magnetic force disappears, two reeds separated due to its elastic line, also is broken. Therefore, as a the use of magnetic field signal to control the circuit switch device, a dry reed pipe can as a sensor, for the count, limit and so on (in the security system is mainly used for making Menci, window magnetic), and is also widely used in a variety of communication devices. 

Features and applications:

1, a dry reed pipe has the advantages of compact structure, light weight, can be installed in an extremely limited space, suitable for the miniaturization of equipment.
2, a dry reed pipe switch components are hermetically sealed in an inert gas atmosphere, always does not contact with the outside environment, service life long.
3, the sliding element is not used in the dry tongue reed pipe, won't appear so in all metal degradation of metal fatigue phenomenon, to ensure that in fact no limit and the service life of the machine.
4, the magnetic reed switch in mobile phones, program-controlled switches, copiers, washing machines, refrigerators, camera, disinfection cupboard, Menci, window magnetic, electromagnetic relay, electronic weighing apparatus, liquid level meter, gas meter, water meter and so on have been very good application.

Reed notes:

1, shear or bending dry reed pipe for the lead foot must extreme caution, so as not to exert undue stress and make the glass to metal seal damaged. Appropriate clamping tools must be used.
2, the temperature and long exposure time can lead to damage to the glass metal seal (cracking, leakage, etc.), and therefore must be fast and reliable welding technology (process). The proposed welding conditions are: 280 to 300 degrees C, 250 to 300 degrees C

Products are packed in cartons, using foam shock absorption and compression to prevent damage in transit.
Also can adjusted by your request.

Shipping Term

1. CHINA POST AIR MAIL as the first choice, and all the free shipping term is based on CHINA POST AIR MAIL.
2. If you want to change express company to cooperate, please inform us, so that to re-check the shipping charge.
3.If you selected the shipping cost more than you had pay,we have the right to change delivery way.
4.All the Russia friends should pay the order with your whole name and full address with correct zip code so that you can picked the parcel easily and quickly.The best way is to selected DHL as the first choice as the urgent order.
5.All the Brazil friends should pay the order in your company name and address,also with the Taxpayer's registration number (also if your country has any new rule,please as your country say),so that you can get the parcel easily.
6.All the customer friends should know if you selected DHL please know the detail about DHL ,if you not agree with the DHL rule and do not pick up the parcel,then the parcel will be return to us but will happen return cost,that also may your's responsibility!Please be noted.
7. The total is excluding the import tax & any other types of tax, please be noted.


Payment Term

1. Alipay as the first choice,Other payment term pls chat with us.(We have our own website ).
2. Except the alipay, the transform charge is to customer's side.
3. Please pay the order within 3 days after you buy it, and we'll send you within 3~5 days after payment.



Mix Order instruction

1. All of the items in our store are available for mixing when you order. Please inform us about it when you pay, we'll recheck the shipping charge.
2. Please check with us about the details before you placing an order, so that to avoid mistake. Many thanks.