Parallax Inc 28140 RFID Reader, 4.5 → 5.5V
- RS Stock No.:
- 6666625
- Mfr. Prt No.:
- 28140
- Brand:
- Parallax Inc
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 6666625 |
| Product description | Parallax Inc 28140 RFID Reader, 4.5 → 5.5V |
| Manufacturer / Brand | Parallax Inc |
| Manufacturer part number | 28140 |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 6666625 |
| Product description | Parallax Inc 28140 RFID Reader, 4.5 → 5.5V |
| Manufacturer / Brand | Parallax Inc |
| Manufacturer part number | 28140 |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Dec 4, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Country of Origin: CN
Product Details
RFID EM4100 card reader module
The Parallax RFID Reader Module is a low-cost solution to read passive RFID transponder tags. The RFID Reader Module can be used in a wide variety of hobbyist and commercial applications, including access control, automatic identification, navigation, inventory tracking and payment systems. It is available in two versions that differ only in the computer communication interface: serial UART or USB.
Note
RFID Tags are available separately: RS Part Nos. 843-0806 , 843-0800 , 843-0793 , 843-0803
A range of low-cost RFID Reader modules and RFID Tags.
Reads 125kHz Tags with EM4100 protocol
Bi-colour LED for visual indication of activity
Power supply: +5Vdc
Communication: 2400bps serial UART (RS 666-6625) or USB (RS 781-3061)
Dimensions: 62.2 x 82.5mm
Operating temperature range: 0 to +70°C
Specifications
| Attribute | Value |
| Brand | Parallax Inc |
| Component Type | Reader |
| Supported Bus Interfaces | UART |
| Supply Voltage | 4.5 → 5.5 V |
| Length | 82.5 mm |
| Maximum Operating Temperature | +85 °C |
| Minimum Operating Temperature | -40 °C |
| Width | 62.2 mm |
