TX Technical Specifications:
A． Working voltage: 3V～12V
B． Working current: max≤40mA (12V), min≤9mA(3V)
C． Resonance mode: sound wave resonance (SAW)
D． Modulation mode: ASK /OOK
E． Working frequency: 315MHz-433.92MHz, customized frequency is available.
F． Transmission power: 25mW (315MHz at 12V)
G． Frequency error: +150kHz (max)
H． Velocity: ≤10Kbps
I． Self-owned codes: negative
 
RX Technical Specifications:
A． Working voltage: 5.0VDC +0.5V
B． Working current:≤5.5mA (5.0VDC)
C． Working principle: single chip superregeneration receiving
D． Working method: OOK/ASK
E． Working frequency: 315MHz-433.92MHz, customized frequency is available.
F． Bandwidth: 2MHz (315MHz, having result from testing at lowing the sensitivity 3dBm)
G． Sensitivity: excel –100dBm (50Ω)
H． Transmitting velocity: <9.6Kbps (at 315MHz and -95dBm)

- The cheapest shipping service is First-Class Package Service, a domestic mail service offered by USPS. It is designed for mailing lightweight packages that weigh up to 15.99 ounces and offers delivery in 1-5 business days. It includes features such as USPS Tracking, which allows customers to track their packages and receive delivery confirmation. USPS prices start at $4.75, but we don't have any control over shipping prices.

- Many customers ask if they can ship their products in an envelope. Unfortunately, we cannot ship merchandise in a paper envelope because it requires extra protection, and USPS does not provide a tracking number for this type of service.