S Series
![ACXHK_S1 Reader](https://static.wixstatic.com/media/ac2afe_8494d518049e430eba958c6f6ea72d42~mv2.png/v1/crop/x_505,y_851,w_2066,h_1682/fill/w_405,h_330,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/S1_2.png)
S1
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Wide range 13.56MHz & 125KHz RF technology
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Single or dual RF technology
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Professional in NXP Mifare, Mifare Plus, Mifare DESFire & LEGIC technology integration
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Red / Green / Blue or mixed color LED
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Built-in optical tamper, waterproof IP67
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Impact test IK06
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Wiegand and scramble RS485 output
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Black or white color
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Designed for Asian and European electrical junction box installations
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Dimensions: 85mm x 85mm x 20mm
![ACXHK_S2 Reader](https://static.wixstatic.com/media/ac2afe_b69a355be2fa45dfae1af32012f61ee4~mv2.png/v1/crop/x_279,y_884,w_1960,h_1671/fill/w_366,h_312,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/S2_web.png)
S2
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Wide range 13.56MHz & 125KHz RF technology
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Single or dual RF technology
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Professional in NXP Mifare, Mifare Plus, Mifare DESFire & LEGIC technology integration
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Red / Green / Blue or mixed color LED
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Touch sensor keypad, overcoming the membrane keypad problem
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Built-in optical tamper, waterproof IP67
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Impact test IK06
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Wiegand and scramble RS485 output
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Black or white color
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Designed for Asian and European electrical junction box installations
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Dimensions: 85mm x 85mm x 20mm
![S3.png](https://static.wixstatic.com/media/dd85cb_ddc9d2b1d1574eb2837b962be6c2bb81~mv2.png/v1/fill/w_52,h_74,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/S3.png)
S3
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Wide range 13.56MHz & 125KHz RF technology
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Single or dual RF technology
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Designed for lift access control
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Professional in Mifare Classic, Mifare Plus, Mifare DESFire & LEGIC technology integration
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Wiegand, OSDP, and ACX scramble encryption output for different security level applications
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Built-in blacklight for compensating the lighting conditions on the QR code paper
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Black or white color
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Dimensions: 85mm x 85mm x 20mm